{"blog_title":"A4\u306e\u5b87\u5b99","title":"\u4f59\u5f26\u5b9a\u7406\u306e\u8a3c\u660e(\u92ed\u89d2\u306b\u5bfe\u5411\u3059\u308b\u8fba\u306e\u5834\u5408)","published":"2019-04-16 07:06:23","provider_url":"https://hatena.blog","width":"100%","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/d/dai-ig/20190415/20190415210938.jpg","description":"\u6982\u8981 \u4efb\u610f\u306e\u306b\u304a\u3044\u3066\u3001\u89d2\u306b\u5bfe\u5411\u3059\u308b\u8fba\u306e\u9577\u3055\u3092\u3092\u7528\u3044\u3066\u8868\u3057\u3001\u4ee5\u4e0b\u306b\u8868\u3055\u308c\u308b\u4f59\u5f26\u5b9a\u7406\u3092\u8a3c\u660e\u3059\u308b\u3002 \\begin{eqnarray}c^2=a^2+b^2-2ab \\cos C\\end{eqnarray} \u5c0e\u51fa \u4eca\u56de\u306f\u56f3\u306e\u3088\u3046\u306b\u3001\u304c\u92ed\u89d2\u306e\u5834\u5408\u3092\u8003\u3048\u308b\u3002 \u70b9\u304b\u3089\u8fba\u306b\u5782\u7dda\u3092\u5f15\u304d\u3001\u88dc\u52a9\u7dda\u3068\u3059\u308b\u3002\u4ea4\u70b9\u3092\u3068\u3059\u308b\u3002 \u3068\u8fba\u3092\u7528\u3044\u3066\u3001\u4e0a\u56f3\u306e\u3088\u3046\u306b\u3068\u304c\u308f\u304b\u308b\u3002\u307e\u305f\u3001\u306a\u306e\u3067\u3068\u8868\u305b\u308b\u3002 \u306f\u3092\u659c\u8fba\u3068\u3059\u308b\u76f4\u89d2\u4e09\u89d2\u5f62\u3067\u3042\u308b\u306e\u3067\u3001\u4e09\u5e73\u65b9\u306e\u5b9a\u7406\u3088\u308a\u4ee5\u4e0b\u306e\u95a2\u4fc2\u304c\u6210\u308a\u7acb\u3064\u3002 \\begin{eqnarray}c^2&=&(b \\sin C)^2 +(a-b\\cos C)^2\\\\&=& b^2 \\sin^2 C+a^2-2ab \\cos \u2026","author_name":"dai-ig","author_url":"https://blog.hatena.ne.jp/dai-ig/","type":"rich","height":"190","provider_name":"Hatena Blog","version":"1.0","blog_url":"https://a4.hateblo.jp/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fa4.hateblo.jp%2Fentry%2F2019%2F04%2F16%2F070623\" title=\"\u4f59\u5f26\u5b9a\u7406\u306e\u8a3c\u660e(\u92ed\u89d2\u306b\u5bfe\u5411\u3059\u308b\u8fba\u306e\u5834\u5408) - A4\u306e\u5b87\u5b99\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":[],"url":"https://a4.hateblo.jp/entry/2019/04/16/070623"}