{"id":1542,"date":"2022-12-31T18:10:42","date_gmt":"2022-12-31T11:10:42","guid":{"rendered":"https:\/\/www.truyenthong.edu.vn\/?p=1542"},"modified":"2022-12-31T18:10:42","modified_gmt":"2022-12-31T11:10:42","slug":"dinh-ly-sin","status":"publish","type":"post","link":"https:\/\/truyenthong.edu.vn\/sanpham\/2022\/12\/31\/dinh-ly-sin\/","title":{"rendered":"\u0110\u1ecbnh l\u00fd sin trong tam gi\u00e1c"},"content":{"rendered":"\n<p>Gi\u1ea3i tam gi\u00e1c : Gi\u1ea3i tam gi\u00e1c l\u00e0 \u0111i t\u00ecm c\u00e1c y\u1ebfu t\u1ed1 (g\u00f3c, c\u1ea1nh) ch\u01b0a bi\u1ebft c\u1ee7a tam gi\u00e1c khi \u0111\u00e3 bi\u1ebft m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u1ee7a tam gi\u00e1c \u0111\u00f3.<\/p>\n\n\n\n<p>Mu\u1ed1n gi\u1ea3i tam gi\u00e1c ta c\u1ea7n t\u00ecm m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa c\u00e1c g\u00f3c, c\u1ea1nh \u0111\u00e3 cho v\u1edbi c\u00e1c g\u00f3c, c\u00e1c c\u1ea1nh ch\u01b0a bi\u1ebft c\u1ee7a tam gi\u00e1c th\u00f4ng qua c\u00e1c h\u1ec7 th\u1ee9c \u0111\u00e3 \u0111\u01b0\u1ee3c n\u00eau trong \u0111\u1ecbnh l\u00ed cosin, \u0111\u1ecbnh l\u00ed sin v\u00e0 c\u00e1c c\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch tam gi\u00e1c.<\/p>\n\n\n\n<!--more-->\n\n\n\n<p><strong>\u0110\u1ecbnh l\u00ed sin:<\/strong><\/p>\n\n\n\n<p>Trong tam gi\u00e1c&nbsp;ABCABC&nbsp;b\u1ea5t k\u1ef3, t\u1ec9 s\u1ed1 gi\u1eefa m\u1ed9t c\u1ea1nh v\u00e0 sin c\u1ee7a g\u00f3c \u0111\u1ed1i di\u1ec7n v\u1edbi c\u1ea1nh \u0111\u00f3 b\u1eb1ng \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a \u0111\u01b0\u1eddng tr\u00f2n ngo\u1ea1i ti\u1ebfp tam gi\u00e1c, ngh\u0129a l\u00e0<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-180136.png\" alt=\"\" class=\"wp-image-1543\" width=\"245\" height=\"51\" srcset=\"https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-180136.png 366w, https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-180136-300x62.png 300w, https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-180136-280x58.png 280w\" sizes=\"auto, (max-width: 245px) 100vw, 245px\" \/><\/figure>\n\n\n\n<p>v\u1edbi&nbsp;R&nbsp;l\u00e0 b\u00e1n k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n ngo\u1ea1i ti\u1ebfp tam gi\u00e1c&nbsp;<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-172424-1-1024x524.png\" alt=\"\" class=\"wp-image-1544\" width=\"388\" height=\"198\" srcset=\"https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-172424-1-1024x524.png 1024w, https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-172424-1-300x154.png 300w, https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-172424-1-768x393.png 768w, https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-172424-1-600x307.png 600w, https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-172424-1-280x143.png 280w, https:\/\/truyenthong.edu.vn\/sanpham\/wp-content\/uploads\/2022\/12\/Screenshot-2022-12-31-172424-1.png 1037w\" sizes=\"auto, (max-width: 388px) 100vw, 388px\" \/><\/figure>\n<\/div>\n\n\n<p>Xem x\u00e9t m\u00f4 h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n\n\n\n<script charset=\"utf-8\" type=\"text\/javascript\" src=\"https:\/\/geometricfunctions.org\/includes\/v4.6\/js\/jquery-2.1.0.js\"><\/script>\n<script charset=\"utf-8\" type=\"text\/javascript\" src=\"https:\/\/geometricfunctions.org\/includes\/v4.6\/js\/wsp.js\"><\/script>\n<script charset=\"utf-8\" type=\"text\/javascript\" src=\"https:\/\/geometricfunctions.org\/includes\/v4.6\/widgets\/jquery.tiny-draggable.js\"><\/script>\n\n<script charset=\"utf-8\" type=\"text\/javascript\" src=\"https:\/\/geometricfunctions.org\/includes\/v4.6\/js\/wsp-runner.js\"><\/script>\n<script charset=\"utf-8\" type=\"text\/javascript\" src=\"https:\/\/geometricfunctions.org\/fc\/tools\/tools.js\"><\/script>\n\n<script charset=\"utf-8\" type=\"text\/javascript\" src=\"https:\/\/www.truyenthong.edu.vn\/online\/websketchpad\/files\/toado-json.js\"><\/script>\n\n<p><\/p>\n<div style=\"float:center; border:0px solid; width:600px;\">\n    <div class=\"sketch_canvas\" data-var=\"toado\" style=\"border:none; border-bottom:0px solid;\">&nbsp;<\/div>\n<\/div>\n\n\n\n<p><strong>Kh\u1ea3o s\u00e1t t\u1ef1 do:<\/strong>&nbsp;H\u00e3y di chuy\u1ec3n c\u00e1c \u0111i\u1ec3m tr\u00ean m\u00e0n h\u00ecnh v\u00e0 xem x\u00e9t nh\u1eefng thay \u0111\u1ed5i. Ghi l\u1ea1i nh\u1eefng thay \u0111\u1ed5i \u0111\u00f3.<\/p>\n\n\n\n<p><strong>Kh\u1ea3o s\u00e1t:&nbsp;<\/strong>&nbsp;D\u00f9ng c\u00f4ng c\u1ee5 &#8220;Calculate&#8221; \u0111\u1ec3 t\u00ednh t\u1ec9 s\u1ed1.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Gi\u1ea3i tam gi\u00e1c : Gi\u1ea3i tam gi\u00e1c l\u00e0 \u0111i t\u00ecm c\u00e1c y\u1ebfu t\u1ed1 (g\u00f3c, c\u1ea1nh) ch\u01b0a bi\u1ebft c\u1ee7a tam gi\u00e1c khi \u0111\u00e3 bi\u1ebft m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 c\u1ee7a tam gi\u00e1c \u0111\u00f3. Mu\u1ed1n gi\u1ea3i tam gi\u00e1c ta c\u1ea7n t\u00ecm m\u1ed1i li\u00ean h\u1ec7 gi\u1eefa c\u00e1c g\u00f3c, c\u1ea1nh \u0111\u00e3 cho v\u1edbi c\u00e1c g\u00f3c, c\u00e1c c\u1ea1nh ch\u01b0a bi\u1ebft c\u1ee7a [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[80,133],"class_list":["post-1542","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-hinh-hoc-phang","tag-sketchpad"],"_links":{"self":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/posts\/1542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/comments?post=1542"}],"version-history":[{"count":0,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/posts\/1542\/revisions"}],"wp:attachment":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/media?parent=1542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/categories?post=1542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/tags?post=1542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}