{"id":359,"date":"2023-07-04T16:49:36","date_gmt":"2023-07-04T16:49:36","guid":{"rendered":"https:\/\/mathority.org\/ja\/%e3%82%b3%e3%82%b5%e3%82%a4%e3%83%b3%e9%96%a2%e6%95%b0\/"},"modified":"2023-07-04T16:49:36","modified_gmt":"2023-07-04T16:49:36","slug":"%e3%82%b3%e3%82%b5%e3%82%a4%e3%83%b3%e9%96%a2%e6%95%b0","status":"publish","type":"post","link":"https:\/\/mathority.org\/ja\/%e3%82%b3%e3%82%b5%e3%82%a4%e3%83%b3%e9%96%a2%e6%95%b0\/","title":{"rendered":"\u30b3\u30b5\u30a4\u30f3\u95a2\u6570"},"content":{"rendered":"<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u3068\u306f\u4f55\u304b\u3001\u305d\u306e\u516c\u5f0f\u3001\u30b0\u30e9\u30d5\u3067\u306e\u8868\u73fe\u65b9\u6cd5\u3001\u95a2\u6570\u306e\u7279\u6027\u3001\u632f\u5e45\u3001\u5468\u671f\u306a\u3069\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306b\u95a2\u3059\u308b\u3059\u3079\u3066\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u3055\u307e\u3056\u307e\u306a\u4f8b\u3092\u898b\u3066\u3001\u6982\u5ff5\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b3\u30b5\u30a4\u30f3\u5b9a\u7406\u3084\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u304c\u4ed6\u306e\u4e09\u89d2\u6bd4\u3068\u6301\u3064\u95a2\u4fc2\u306b\u3064\u3044\u3066\u3082\u8aac\u660e\u3057\u307e\u3059\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exemples-de-fonctions-cosinus.webp\" alt=\"\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u4f8b\" class=\"wp-image-289\" width=\"766\" height=\"331\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"formula-de-la-funcion-coseno\"><\/span>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u516c\u5f0f<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div style=\"background:linear-gradient(to bottom, #FFFFFF 0%, #FFE0B2 100%); padding-top: 23px; padding-bottom: 0.5px; padding-right: 30px; padding-left: 30px; border: 2px dashed #FF9B28; border-radius:20px;\">\n<p style=\"text-align:left\">\u89d2\u5ea6 \u03b1 \u306e<strong>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306f<\/strong>\u4e09\u89d2\u95a2\u6570\u3067\u3042\u308a\u3001\u305d\u306e\u5f0f\u306f\u96a3\u63a5\u3059\u308b (\u307e\u305f\u306f\u96a3\u63a5\u3059\u308b) \u811a\u3068\u76f4\u89d2\u4e09\u89d2\u5f62 (\u76f4\u89d2\u306e\u4e09\u89d2\u5f62) \u306e\u659c\u8fba\u3068\u306e\u6bd4\u3068\u3057\u3066\u5b9a\u7fa9\u3055\u308c\u307e\u3059\u3002 <\/p>\n<\/div>\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-159\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/quelle-est-la-formule-de-la-fonction-cosinus.webp\" alt=\"\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u516c\u5f0f\u306f\u4f55\u3067\u3059\u304b\" class=\"wp-image-290\" width=\"279\" height=\"66\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<\/div>\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/fonctions-trigonometriques.webp\" alt=\"\u30b3\u30b5\u30a4\u30f3\u306f\u4e09\u89d2\u95a2\u6570\u3067\u3059\" class=\"wp-image-277\" width=\"233\" height=\"159\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<p>\u3053\u306e\u30bf\u30a4\u30d7\u306e\u6570\u5b66\u95a2\u6570\u306f\u3001\u30b3\u30b5\u30a4\u30f3\u3001\u30b3\u30b5\u30a4\u30f3\u3001\u307e\u305f\u306f\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u3068\u3082\u547c\u3070\u308c\u307e\u3059\u3002<\/p>\n<p>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306f\u3001\u89d2\u5ea6\u306e\u30b5\u30a4\u30f3\u304a\u3088\u3073\u30bf\u30f3\u30b8\u30a7\u30f3\u30c8\u3068\u4e26\u3093\u3067\u3001\u6700\u3082\u3088\u304f\u77e5\u3089\u308c\u3066\u3044\u308b 3 \u3064\u306e\u4e09\u89d2\u6bd4\u306e 1 \u3064\u3067\u3059\u3002 <\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"valores-caracteristicos-de-la-funcion-coseno\"><\/span>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u7279\u6027\u5024<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u4e00\u90e8\u306e\u89d2\u5ea6\u306f\u983b\u7e41\u306b\u7e70\u308a\u8fd4\u3055\u308c\u308b\u305f\u3081\u3001\u6b21\u306e\u89d2\u5ea6\u3067\u306e\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u5024\u3092\u77e5\u3063\u3066\u304a\u304f\u3068\u4fbf\u5229\u3067\u3059\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/valeurs-caracteristiques-fonction-cosinus.webp\" alt=\"\u7279\u6027\u5024\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\" class=\"wp-image-291\" width=\"719\" height=\"190\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u7b26\u53f7\u306f\u3001\u89d2\u5ea6\u304c\u4f4d\u7f6e\u3059\u308b\u8c61\u9650\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u89d2\u5ea6\u304c\u7b2c 1 \u8c61\u9650\u307e\u305f\u306f\u7b2c 4 \u8c61\u9650\u306b\u3042\u308b\u5834\u5408\u3001\u30b3\u30b5\u30a4\u30f3\u306f\u6b63\u306b\u306a\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\u89d2\u5ea6\u304c\u7b2c 2 \u8c61\u9650\u307e\u305f\u306f\u7b2c 3 \u8c61\u9650\u306b\u3042\u308b\u5834\u5408\u306f\u3001\u30b3\u30b5\u30a4\u30f3\u306f\u6b63\u306b\u306a\u308a\u307e\u3059\u3002 \u3001\u30b3\u30b5\u30a4\u30f3\u306f\u8ca0\u306b\u306a\u308a\u307e\u3059\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/signe-fonction-cosinus.webp\" alt=\"\u30b5\u30a4\u30f3\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\" class=\"wp-image-292\" width=\"284\" height=\"276\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"representacion-grafica-de-la-funcion-coseno\"><\/span>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u30b0\u30e9\u30d5\u8868\u793a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u524d\u306e\u30bb\u30af\u30b7\u30e7\u30f3\u3067\u898b\u305f\u5024\u306e\u8868\u3092\u4f7f\u7528\u3057\u3066\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u3092\u30b0\u30e9\u30d5\u5316\u3067\u304d\u307e\u3059\u3002\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u3092\u30b0\u30e9\u30d5\u5316\u3059\u308b\u3068\u3001\u6b21\u306e\u3053\u3068\u304c\u5f97\u3089\u308c\u307e\u3059\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/fonction-graphique-cosinus.webp\" alt=\"\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u3092\u30b0\u30e9\u30d5\u5316\u3059\u308b\u65b9\u6cd5\" class=\"wp-image-293\" width=\"851\" height=\"238\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u30b0\u30e9\u30d5\u304b\u3089\u308f\u304b\u308b\u3088\u3046\u306b\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u753b\u50cf\u306e\u5024\u306f\u5e38\u306b +1 \u3068 -1 \u306e\u9593\u306b\u3042\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u4e0a\u90e8\u306f +1 \u3067\u5236\u9650\u3055\u308c\u3001\u4e0b\u90e8\u306f -1 \u3067\u5236\u9650\u3055\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u5024\u306f 360 \u5ea6 (2\u03c0 \u30e9\u30b8\u30a2\u30f3) \u3054\u3068\u306b\u7e70\u308a\u8fd4\u3055\u308c\u308b\u305f\u3081\u3001\u5468\u671f\u304c 360 \u5ea6\u306e<strong>\u5468\u671f\u95a2\u6570<\/strong>\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u3053\u306e\u30b0\u30e9\u30d5\u3067\u306f\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u304c\u5076\u6570\u3067\u3042\u308b\u3053\u3068\u304c\u5b8c\u5168\u306b\u7406\u89e3\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u53cd\u5bfe\u5074\u306e\u8981\u7d20\u304c\u540c\u3058\u30a4\u30e1\u30fc\u30b8\u3092\u6301\u3063\u3066\u3044\u308b\u305f\u3081\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u8ef8 (Y \u8ef8) \u306b\u5bfe\u3057\u3066\u5bfe\u79f0\u7684\u3067\u3059\u3002\u305f\u3068\u3048\u3070\u300190\u00b0\u306e\u30b3\u30b5\u30a4\u30f3\u306f 0\u3001-90\u00b0\u306e\u30b3\u30b5\u30a4\u30f3\u306f 0 \u3067\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"propiedades-de-la-funcion-coseno\"><\/span>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u6027\u8cea<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306b\u306f\u6b21\u306e\u7279\u5fb4\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u30b0\u30e9\u30d5\u304c\u793a\u3059\u3088\u3046\u306b\u3001\u3053\u306e\u95a2\u6570\u306f\u72ec\u7acb\u5909\u6570 x \u306e\u4efb\u610f\u306e\u5024\u306b\u5bfe\u3057\u3066\u5b58\u5728\u3059\u308b\u305f\u3081\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u5b9a\u7fa9\u57df\u306f\u3059\u3079\u3066\u5b9f\u6570\u3067\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-0cd1539b66edeb38040ed80168e1fd9b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Dom } f = \\mathbb{R}\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"90\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<ul>\n<li>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u30d1\u30b9\u307e\u305f\u306f\u7bc4\u56f2\u306f\u3001\u8ca0\u306e 1 \u304b\u3089\u6b63\u306e 1 \u307e\u3067\u3067\u3059 (\u4e21\u65b9\u3092\u542b\u307f\u307e\u3059)\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-e482af9546623edf3132cf9076a0a2d2_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\text{Im } f= [-1,1]\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"109\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<ul>\n<li>\u3053\u308c\u306f\u9023\u7d9a\u95a2\u6570\u3067\u3042\u308a\u3001\u5468\u671f\u6027 2\u03c0 \u306e\u5076\u6570\u3067\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-73d05981a1aa8f4e0582314e95d39e41_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{cos }x = \\text{cos}(-x)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"124\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<ul>\n<li>\u3053\u306e\u30bf\u30a4\u30d7\u306e\u4e09\u89d2\u95a2\u6570\u306b\u306f\u3001\u70b9 (0,1) \u306b OY \u8ef8\u3068\u306e\u4ea4\u70b9\u304c 1 \u3064\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dd01415f329053c1a450867378fc1582_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"(0,1)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"38\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<ul>\n<li>\u4ee3\u308f\u308a\u306b\u3001\u5e73\u5747\u5186\u5468\u7387\u306e\u5947\u6570\u500d\u306e\u5ea7\u6a19\u3067\u6a2a\u5ea7\u6a19 (X \u8ef8) \u3092\u5b9a\u671f\u7684\u306b\u5207\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-fd7154018fa3a27e9ef05fbd795c0ab0_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\left(\\frac{\\pi}{2}+k\\pi ,0\\right) \\qquad k \\in \\mathbb{Z}\" title=\"Rendered by QuickLaTeX.com\" height=\"33\" width=\"174\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<ul>\n<li>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u6700\u5927\u5024\u306f\u3001\u6b21\u306e\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-afd30b6f4068ae25bcf6f5c3c5383b49_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x = 2\\pi k \\qquad k \\in \\mathbb{Z}\" title=\"Rendered by QuickLaTeX.com\" height=\"13\" width=\"142\" style=\"vertical-align: -1px;\"><\/p>\n<\/p>\n<ul>\n<li>\u9006\u306b\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u6700\u5c0f\u5024\u306f\u6b21\u306e\u3068\u304d\u306b\u767a\u751f\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-36b69eacefd39b7629ec6390f9aa2534_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"x = \\pi(2k +1 ) \\qquad k \\in \\mathbb{Z}\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"186\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<ul>\n<li>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u5c0e\u95a2\u6570\u306f\u3001\u7b26\u53f7\u3092\u5909\u66f4\u3057\u305f\u30b5\u30a4\u30f3\u3067\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b95627ad9c9def0c5067ac09d10a2e6e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"f(x)=\\text{cos } x \\ \\longrightarrow \\ f'(x)= -\\text{sen } x\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"265\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<ul>\n<li>\u6700\u5f8c\u306b\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u7a4d\u5206\u306f\u30b5\u30a4\u30f3\u3067\u3059\u3002 <\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-24ca02414a475f41f1834c4e98945f5f_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\int \\text{cos } x \\ dx= \\text{sen } x + C\" title=\"Rendered by QuickLaTeX.com\" height=\"40\" width=\"186\" style=\"vertical-align: -16px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"periodo-y-amplitud-de-la-funcion-coseno\"><\/span>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u5468\u671f\u3068\u632f\u5e45<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u5f7c\u306e\u30b0\u30e9\u30d5\u3067\u898b\u305f\u3088\u3046\u306b\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306f\u5468\u671f\u95a2\u6570\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u305d\u306e\u5024\u306f\u3042\u308b\u5468\u6ce2\u6570\u3067\u7e70\u308a\u8fd4\u3055\u308c\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u632f\u52d5\u3059\u308b\u6700\u5927\u5024\u3068\u6700\u5c0f\u5024\u306f\u632f\u5e45\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u3092\u6c7a\u5b9a\u3059\u308b 2 \u3064\u306e\u91cd\u8981\u306a\u7279\u6027\u306f\u3001\u305d\u306e\u5468\u671f\u3068\u632f\u5e45\u3067\u3059\u3002<\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5d7700fc10f642ba455e6ed144d6d920_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle f(x)= A\\text{cos}(wx)\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"131\" style=\"vertical-align: -5px;\"><\/p>\n<\/p>\n<ul>\n<li>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e<strong>\u5468\u671f\u306f<\/strong>\u3001\u30b0\u30e9\u30d5\u304c\u7e70\u308a\u8fd4\u3055\u308c\u308b 2 \u70b9\u9593\u306e\u8ddd\u96e2\u3067\u3042\u308a\u3001\u6b21\u306e\u5f0f\u3067\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d7fb20df076d5a234a762eddb6296460_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{Periodo}=T=\\cfrac{2\\pi}{w}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"141\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<ul>\n<li>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e<strong>\u5927\u304d\u3055<\/strong>\u306f\u3001\u30b3\u30b5\u30a4\u30f3\u9805\u306e\u524d\u306e\u4fc2\u6570\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-fa2caa412704d15a278c5d8a0f1773d3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{Amplitud}=A\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"111\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p>\u4ee5\u4e0b\u306b\u3001\u5468\u671f\u307e\u305f\u306f\u632f\u5e45\u3092\u5909\u66f4\u3057\u305f\u5834\u5408\u306e\u5f71\u97ff\u3092\u793a\u3059\u30b0\u30e9\u30d5\u3092\u793a\u3057\u307e\u3059\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/exemples-de-fonctions-cosinus.webp\" alt=\"\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u4f8b\" class=\"wp-image-289\" width=\"802\" height=\"347\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p>\u7dd1\u8272\u3067\u793a\u3055\u308c\u305f\u95a2\u6570\u3067\u306f\u3001\u632f\u5e45\u3092 2 \u500d\u306b\u3059\u308b\u3053\u3068\u306b\u3088\u308a\u3001\u95a2\u6570\u304c +1 \u304b\u3089 -1 \u3067\u306f\u306a\u304f +2 \u304b\u3089 -2 \u306b\u306a\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001\u8d64\u3067\u793a\u3057\u305f\u95a2\u6570\u3067\u306f\u3001\u5468\u671f\u304c\u534a\u5206\u306b\u306a\u3063\u3066\u3044\u308b\u305f\u3081\u3001\u300c\u6b63\u6e96\u300d\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e 2 \u500d\u306e\u901f\u5ea6\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"teorema-del-coseno\"><\/span>\u4f59\u5f26\u5b9a\u7406<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u30b3\u30b5\u30a4\u30f3\u306e\u516c\u5f0f\u306f\u901a\u5e38\u76f4\u89d2\u4e09\u89d2\u5f62\u3067\u4f7f\u7528\u3055\u308c\u307e\u3059\u304c\u3001\u3042\u3089\u3086\u308b\u30bf\u30a4\u30d7\u306e\u4e09\u89d2\u5f62\u306b\u9069\u7528\u3067\u304d\u308b\u5b9a\u7406\u3001\u30b3\u30b5\u30a4\u30f3\u307e\u305f\u306f\u30b3\u30b5\u30a4\u30f3\u5b9a\u7406\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><strong>\u30b3\u30b5\u30a4\u30f3\u5b9a\u7406\u306f\u3001<\/strong>\u4e09\u89d2\u5f62\u306e\u8fba\u3068\u89d2\u5ea6\u3092\u6b21\u306e\u3088\u3046\u306b\u95a2\u9023\u4ed8\u3051\u307e\u3059\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/uploads\/2023\/07\/theoreme-des-sinus-ou-des-sinus.webp\" alt=\"\" class=\"wp-image-281\" width=\"188\" height=\"136\" srcset=\"\" sizes=\"auto, \"><\/figure>\n<\/div>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-bc98603a3dca4ccd66aa95e0b9012313_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"a^2=b^2+c^2-2\\cdot b \\cdot c\\cdot \\text{cos }\\alpha\" title=\"Rendered by QuickLaTeX.com\" height=\"17\" width=\"218\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-dadb264e4d51fe54c8bab49844451a6a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"b^2=a^2+c^2-2\\cdot a \\cdot c\\cdot \\text{cos }\\beta\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"220\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-106b89d1c682a376ffe407061c1cf6b4_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"c^2=a^2+b^2-2\\cdot a \\cdot b\\cdot \\text{cos }\\gamma\" title=\"Rendered by QuickLaTeX.com\" height=\"19\" width=\"219\" style=\"vertical-align: -4px;\"><\/p>\n<\/p>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"relaciones-de-la-funcion-coseno-con-otras-razones-trigonometricas\"><\/span>\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u3068\u4ed6\u306e\u4e09\u89d2\u6bd4\u306e\u95a2\u4fc2<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>\u6b21\u306b\u3001\u4e09\u89d2\u6cd5\u3067\u6700\u3082\u91cd\u8981\u306a\u4e09\u89d2\u6bd4\u3068\u306e\u30b3\u30b5\u30a4\u30f3\u95a2\u4fc2\u304c\u308f\u304b\u308a\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u4e73\u623f\u3068\u306e\u95a2\u4fc2<\/h3>\n<ul>\n<li>\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u30b0\u30e9\u30d5\u306f\u30b3\u30b5\u30a4\u30f3\u66f2\u7dda\u3068\u7b49\u4fa1\u3067\u3059\u304c\u3001\u30b7\u30d5\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-872406b5cba35c728fec57380ddc6571_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\frac{\\pi}{2}\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"11\" style=\"vertical-align: -12px;\"><\/p>\n<p>\u3057\u305f\u304c\u3063\u3066\u3001\u53f3\u5074\u3067\u306f\u30012 \u3064\u306e\u95a2\u6570\u3092\u6b21\u306e\u5f0f\u3067\u30ea\u30f3\u30af\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-b7c0174ac34e19bd5d5031a57511f3ab_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{cos }\\alpha = \\text{sen}\\left(\\alpha + \\frac{\\pi}{2} \\right)\" title=\"Rendered by QuickLaTeX.com\" height=\"33\" width=\"159\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<ul>\n<li>\u30b5\u30a4\u30f3\u3068\u30b3\u30b5\u30a4\u30f3\u3092\u4e09\u89d2\u95a2\u6570\u306e\u57fa\u672c\u6052\u7b49\u5f0f\u306b\u95a2\u9023\u4ed8\u3051\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-205d778d5fa04e4bd4a8543489c6f2f8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{sen}^2\\alpha + \\text{cos}^2\\alpha=1\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"140\" style=\"vertical-align: -2px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\">\u63a5\u7dda\u3068\u306e\u95a2\u4fc2<\/h3>\n<ul>\n<li>\u8a3c\u660e\u3059\u308b\u306e\u306f\u8907\u96d1\u3067\u3059\u304c\u3001\u30b3\u30b5\u30a4\u30f3\u306f\u30bf\u30f3\u30b8\u30a7\u30f3\u30c8\u306b\u5f93\u3063\u3066\u306e\u307f\u8868\u73fe\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-5f02ab2f30c72a36534ca72504b3f3bc_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{cos }\\alpha = \\pm \\cfrac{1}{\\sqrt{1+\\text{tg}^2\\alpha \\vphantom{\\bigl( }}}\" title=\"Rendered by QuickLaTeX.com\" height=\"56\" width=\"164\" style=\"vertical-align: -30px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\">\u30bb\u30ab\u30f3\u30c8\u3068\u306e\u95a2\u4fc2<\/h3>\n<ul>\n<li>\u30b3\u30b5\u30a4\u30f3\u3068\u30bb\u30ab\u30f3\u30c8\u306f\u4e57\u6cd5\u9006\u6570\u3067\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-d594068747a2bdf9e3825973cb563161_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{cos }\\alpha =  \\cfrac{1}{\\text{sec }\\alpha}\" title=\"Rendered by QuickLaTeX.com\" height=\"38\" width=\"108\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\">\u30b3\u30bb\u30ab\u30f3\u30c8\u3068\u306e\u95a2\u4fc2<\/h3>\n<ul>\n<li>\u30b3\u30b5\u30a4\u30f3\u306f\u30b3\u30bb\u30ab\u30f3\u30c8\u306e\u307f\u306b\u4f9d\u5b58\u3059\u308b\u3088\u3046\u306b\u89e3\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f5440750856c43de3a6c242335ff44a5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{cos }\\alpha =\\pm \\cfrac{\\sqrt{\\text{csc}^2\\alpha -1 } }{\\text{csc }\\alpha}\" title=\"Rendered by QuickLaTeX.com\" height=\"41\" width=\"168\" style=\"vertical-align: -12px;\"><\/p>\n<\/p>\n<h3 class=\"wp-block-heading\">\u30b3\u30bf\u30f3\u30b8\u30a7\u30f3\u30c8\u3068\u306e\u95a2\u4fc2<\/h3>\n<ul>\n<li>\u89d2\u5ea6\u306e\u30b3\u30b5\u30a4\u30f3\u3068\u30b3\u30bf\u30f3\u30b8\u30a7\u30f3\u30c8\u306f\u6b21\u306e\u65b9\u7a0b\u5f0f\u3067\u95a2\u4fc2\u4ed8\u3051\u3089\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<p class=\"has-text-align-center\"><img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/mathority.org\/wp-content\/ql-cache\/quicklatex.com-f0646b8d7d5ee36eac5b6b1889022851_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"\\displaystyle \\text{cos }\\alpha =\\pm \\cfrac{\\text{cot }\\alpha}{\\sqrt{1+\\text{cot}^2\\alpha \\vphantom{\\bigl( }}}\" title=\"Rendered by QuickLaTeX.com\" height=\"56\" width=\"172\" style=\"vertical-align: -30px;\"><\/p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3053\u306e\u30da\u30fc\u30b8\u3067\u306f\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u3068\u306f\u4f55\u304b\u3001\u305d\u306e\u516c\u5f0f\u3001\u30b0\u30e9\u30d5\u3067\u306e\u8868\u73fe\u65b9\u6cd5\u3001\u95a2\u6570\u306e\u7279\u6027\u3001\u632f\u5e45\u3001\u5468\u671f\u306a\u3069\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306b\u95a2\u3059\u308b\u3059\u3079\u3066\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30b3\u30b5\u30a4\u30f3\u95a2\u6570\u306e\u3055\u307e\u3056\u307e\u306a\u4f8b\u3092\u898b\u3066\u3001\u6982\u5ff5\u3092\u5b8c\u5168\u306b\u7406\u89e3\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30b3\u30b5\u30a4 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/mathority.org\/ja\/%e3%82%b3%e3%82%b5%e3%82%a4%e3%83%b3%e9%96%a2%e6%95%b0\/\"> <span class=\"screen-reader-text\">\u30b3\u30b5\u30a4\u30f3\u95a2\u6570<\/span> \u3082\u3063\u3068\u8aad\u3080 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