{"id":868,"date":"2025-11-20T14:13:58","date_gmt":"2025-11-20T05:13:58","guid":{"rendered":"http:\/\/saegil-lab.kr\/?p=868"},"modified":"2025-11-20T14:25:29","modified_gmt":"2025-11-20T05:25:29","slug":"%ec%82%ac%ec%9d%b8-%ec%a0%95%eb%a6%ac-%ec%bd%94%ec%82%ac%ec%9d%b8-%ec%a0%95%eb%a6%ac","status":"publish","type":"post","link":"https:\/\/saegil-lab.kr\/?p=868","title":{"rendered":"\uc0ac\uc778 \uc815\ub9ac, \ucf54\uc0ac\uc778 \uc815\ub9ac"},"content":{"rendered":"
\n
\"\"<\/figure>\n<\/div>\n\n\n

<\/p>\n\n\n\n

\uc0ac\uc778 \uc815\ub9ac<\/strong><\/p>\n\n\n\n

\uc0bc\uac01\ud615 ABC\uc758 \uc138 \uac01\uc758 \ud06c\uae30 A, B, C\uc640 \uc138 \ubcc0\uc758 \uae38\uc774 \"a\", \"b\", \"c\" \uc0ac\uc774\uc5d0\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uad00\uacc4\uac00 \uc131\ub9bd\ud55c\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \frac{\sin\rm{A}}{a} = \frac{\sin\rm{B}}{b} = \frac{\sin\rm{C}}{c}\]\"<\/p><\/p>\n\n\n\n

\uc0bc\uac01\ud615\uc758 \uba74\uc801\uc744 \"S\"\ub77c\uace0 \ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \ud45c\ud604\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[S = \frac{1}{2} ab \sin\rm{C} = \frac{1}{2} \it bc \sin\rm{A} = \frac{1}{2} \it ca\sin\rm{B}\]\"<\/p><\/p>\n\n\n\n

\uc704 \uc2dd\uc744 \uac01\uac01 \"abc\"\ub85c \ub098\ub204\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 \uad00\uacc4\ub97c \uc5bb\uc744 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \frac{\sin\rm{A}}{a} = \frac{\sin\rm{B}}{b} = \frac{\sin\rm{C}}{c}\]\"<\/p><\/p>\n\n\n\n

\ucf54\uc0ac\uc778 \uc815\ub9ac<\/strong><\/p>\n\n\n\n

\uc0bc\uac01\ud615 ABC\uc758 \uc138 \uac01\uc758 \ud06c\uae30 A, B, C\uc640 \uc138 \ubcc0\uc758 \uae38\uc774 \"a\", \"b\", \"c\"\uc0ac\uc774\uc5d0\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uad00\uacc4\uac00 \uc131\ub9bd\ud55c\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ a^2 = b^2 + c^2 - 2bc \cos\rm{A} \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ b^2 = c^2 + a^2 - 2ca \cos\rm{B} \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ c^2 = a^2 + b^2 - 2ab \cos\rm{C} \]\"<\/p><\/p>\n\n\n

\n
\"\"<\/figure>\n<\/div>\n\n\n

A\uc5d0\uc11c \"\overline{\rm{BC}}\"\uc5d0 \uc218\uc120\uc744 \uae0b\uace0 \uadf8 \uc810\uc744 H\ub77c\uace0 \ud558\uc790. \uc0bc\uac01\ud615\uc5d0\uc11c \ub2e4\uc74c\uacfc \uac19\uc740 \uad00\uacc4\ub97c \ucc3e\uc744 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \overline{\rm{AH}} = b \sin\rm{C} \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \overline{\rm{HC}} = b \cos\rm{C} \]\"<\/p><\/p>\n\n\n\n

  <\/span>   <\/span>\"\[ \overline{\rm{BH}} = a - b \cos\rm{C} \]\"<\/p><\/p>\n\n\n\n

\uc9c1\uac01 \uc0bc\uac01\ud615 ABH\uc5d0 \ud53c\ud0c0\uace0\ub77c\uc2a4 \uc815\ub9ac\ub97c \uc801\uc6a9\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 \uad00\uacc4\ub97c \uc5bb\uc744 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

  <\/span>   <\/span>\"\begin{align*}c^2 & = \overline{\rm{BH}}^2 + \overline{\rm{AH}}^2 \\ & = (a - b\cos\rm{C})^2 + (b \sin\rm{C})^2 \\ & = a^2 - 2ab\cos\rm{C} + b^2 \cos^2\rm{C} + b^2 \sin^2\rm{C} \\ & = a^2 -2ab\cos\rm{C} + b^2 (\cos^2\rm{C} + \sin^2\rm{C}) \\ & = a^2 + b^2 - 2ab\cos\rm{C}\end{align*}\"<\/p><\/p>\n\n\n\n

\uc5ec\uae30\uc11c \"\cos^2\rm{C} + \sin^2\rm{C} = 1\"\uc774\ub77c\ub294 \uad00\uacc4\uc2dd\uc744 \uc774\uc6a9\ud558\uc600\ub2e4. [\uc0bc\uac01\ud568\uc218\uc640 \ud56d\ub4f1\uc2dd]<\/a><\/p>\n\n\n\n

\ub098\uba38\uc9c0 \"a^2\", \"b^2\"\uc758 \uac12\ub3c4 \uc704\uc640 \uac19\uc740 \ubc29\uc2dd\uc73c\ub85c \uad6c\ud560 \uc218 \uc788\ub2e4.<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

\uc0ac\uc778 \uc815\ub9ac \uc0bc\uac01\ud615 ABC\uc758 \uc138 \uac01\uc758 \ud06c\uae30 A, B, C\uc640 \uc138 \ubcc0\uc758 \uae38\uc774 , , \uc0ac\uc774\uc5d0\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uad00\uacc4\uac00 \uc131\ub9bd\ud55c\ub2e4.     \uc0bc\uac01\ud615\uc758 \uba74\uc801\uc744 \ub77c\uace0 \ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc774 \ud45c\ud604\ud560 \uc218 \uc788\ub2e4.     \uc704 \uc2dd\uc744 \uac01\uac01 \ub85c \ub098\ub204\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 … \uacc4\uc18d \uc77d\uae30 →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13],"tags":[63,62,61,65,64],"class_list":["post-868","post","type-post","status-publish","format-standard","hentry","category-13","tag-63","tag-62","tag-61","tag-65","tag-64"],"_links":{"self":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/868","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=868"}],"version-history":[{"count":12,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/868\/revisions"}],"predecessor-version":[{"id":884,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=\/wp\/v2\/posts\/868\/revisions\/884"}],"wp:attachment":[{"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=868"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=868"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/saegil-lab.kr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=868"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}