{"id":282,"date":"2024-12-30T08:03:24","date_gmt":"2024-12-30T05:03:24","guid":{"rendered":"https:\/\/currconv.ru\/blog\/15127-2\/"},"modified":"2024-12-30T08:03:24","modified_gmt":"2024-12-30T05:03:24","slug":"15127","status":"publish","type":"post","link":"https:\/\/currconv.ru\/blog\/15127\/","title":{"rendered":"\u041f\u0440\u0438\u043c\u0435\u0440 \u211653 \u0438\u0437 \u0437\u0430\u0434\u0430\u043d\u0438\u044f 15"},"content":{"rendered":"<div class=\"fpm_start\"><\/div>\n<p>\u0412 \u0442\u0440\u0435\u0443\u0433\u043e\u043b\u044c\u043d\u0438\u043a\u0435 ABC \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e, \u0447\u0442\u043e AB=5, BC=6, AC=4. \u041d\u0430\u0439\u0434\u0438\u0442\u0435 cos\u2220ABC.<\/p>\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"231\" height=\"129\" src=\"https:\/\/currconv.ru\/blog\/wp-content\/uploads\/2023\/12\/image-9.png\" alt=\"\" class=\"wp-image-8726\"\/><\/figure>\n<p><span id=\"more-15127\"><\/span><\/p>\n<hr class=\"wp-block-separator has-css-opacity\"\/>\n<h2 class=\"wp-block-heading has-text-align-center has-medium-font-size\"><strong>\u0420\u0435\u0448\u0435\u043d\u0438\u0435<\/strong><\/h2>\n<p>\u0414\u043b\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u0441\u044f \u0442\u0435\u043e\u0440\u0435\u043c\u043e\u0439 \u043a\u043e\u0441\u0438\u043d\u0443\u0441\u043e\u0432:<\/p>\n<p><span class=\"katex-eq\" data-katex-display=\"false\">c^2=a^2+b^2-2abcosC,<\/span> \u0433\u0434\u0435 <span class=\"katex-eq\" data-katex-display=\"false\">a<\/span>, <span class=\"katex-eq\" data-katex-display=\"false\">b<\/span> \u0438 <span class=\"katex-eq\" data-katex-display=\"false\">c<\/span> &#8211; \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0442\u0440\u0435\u0443\u0433\u043e\u043b\u044c\u043d\u0438\u043a\u0430.<\/p>\n<p>\u0412 \u043d\u0430\u0448\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435 <span class=\"katex-eq\" data-katex-display=\"false\">c=AC<\/span>, \u0442.\u043a. <span class=\"katex-eq\" data-katex-display=\"false\">AC<\/span> \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0440\u043e\u0442\u0438\u0432\u043e\u043b\u0435\u0436\u0430\u0449\u0435\u0439 \u0441\u0442\u043e\u0440\u043e\u043d\u043e\u0439 \u0443\u0433\u043b\u0430 <span class=\"katex-eq\" data-katex-display=\"false\">ABC<\/span>, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0430\u043c \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u043d\u0430\u0439\u0442\u0438; <span class=\"katex-eq\" data-katex-display=\"false\">a=AB<\/span>, <span class=\"katex-eq\" data-katex-display=\"false\">b=BC<\/span> \u0438 \u0443\u0433\u043e\u043b <span class=\"katex-eq\" data-katex-display=\"false\">cos\u2220B.<\/span><\/p>\n<p>\u041f\u043e\u0434\u0441\u0442\u0430\u0432\u0438\u043c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432 \u0444\u043e\u0440\u043c\u0443\u043b\u0443 \u0438 \u043d\u0430\u0439\u0434\u0435\u043c <span class=\"katex-eq\" data-katex-display=\"false\">cos\u2220B:<\/span><\/p>\n<p><span class=\"katex-eq\" data-katex-display=\"false\">AC^2=AB^2+BC^2-2 \\cdot AB \\cdot BC \\cdot cos\u2220B;<\/span><\/p>\n<p><span class=\"katex-eq\" data-katex-display=\"false\">4^2=5^2+6^2-2 \\cdot 5 \\cdot 6 \\cdot cos\u2220B;<\/span><\/p>\n<p><span class=\"katex-eq\" data-katex-display=\"false\">16=25+36-60 \\cdot cos\u2220B;<\/span><\/p>\n<p><span class=\"katex-eq\" data-katex-display=\"false\">60cos\u2220B=25+36-16;<\/span><\/p>\n<p><script data-noptimize=\"\" data-wpfc-render=\"false\">\nfpm_start( \"true\" );\n<\/script><\/p>\n<p><span class=\"katex-eq\" data-katex-display=\"false\">60cos\u2220B=45;<\/span><\/p>\n<p><span class=\"katex-eq\" data-katex-display=\"false\">cos\u2220B=0,75.<\/span><\/p>\n<p><strong>\u041e\u0442\u0432\u0435\u0442:<\/strong>\u00a0<span class=\"katex-eq\" data-katex-display=\"false\">0,75<\/span>.<span class=\"MathJax_Preview\" style=\"display: none;\"><\/span><span class=\"MathJax\" id=\"MathJax-Element-4-Frame\" tabindex=\"0\" style=\"\"><nobr><span class=\"math\" id=\"MathJax-Span-15\" style=\"width: 1.2em; display: inline-block;\"><span style=\"display: inline-block; position: relative; width: 1.008em; height: 0px; font-size: 116%;\"><span style=\"position: absolute; clip: rect(1.535em, 1000.96em, 2.493em, -999.998em); top: -2.344em; left: 0em;\"><span style=\"display: inline-block; width: 0px; height: 2.349em;\"><\/span><span style=\"display: inline-block; width: 0px; height: 2.349em;\"><\/span><span style=\"display: inline-block; width: 0px; height: 2.349em;\"><\/span><\/span><\/span><\/span><\/nobr><\/span><\/p>\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n<p><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong>\u0418\u0441\u0442\u043e\u0447\u043d\u0438\u043a:<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong> \u041e\u0413\u042d 2025. \u041c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u043a\u0430. 50 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043e\u0432. \u0422\u0438\u043f\u043e\u0432\u044b\u0435 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u044d\u043a\u0437\u0430\u043c\u0435\u043d\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0437\u0430\u0434\u0430\u043d\u0438\u0439 \u043e\u0442 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u041e\u0413\u042d. \u042f\u0449\u0435\u043d\u043a\u043e \u0418. \u0412. (\u0432\u0430\u0440\u0438\u0430\u043d\u0442 16) <\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0412 \u0442\u0440\u0435\u0443\u0433\u043e\u043b\u044c\u043d\u0438\u043a\u0435 ABC \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u043e, \u0447\u0442\u043e AB=5, BC=6, AC=4. \u041d\u0430\u0439\u0434\u0438\u0442\u0435 cos\u2220ABC. \u0420\u0435\u0448\u0435\u043d\u0438\u0435 \u0414\u043b\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u0441\u044f \u0442\u0435\u043e\u0440\u0435\u043c\u043e\u0439 \u043a\u043e\u0441\u0438\u043d\u0443\u0441\u043e\u0432: c^2=a^2+b^2-2abcosC, \u0433\u0434\u0435 a, b \u0438 c &#8211; \u0441\u0442\u043e\u0440\u043e\u043d\u044b \u0442\u0440\u0435\u0443\u0433\u043e\u043b\u044c\u043d\u0438\u043a\u0430. \u0412 \u043d\u0430\u0448\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435 c=AC, \u0442.\u043a. AC \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0440\u043e\u0442\u0438\u0432\u043e\u043b\u0435\u0436\u0430\u0449\u0435\u0439 \u0441\u0442\u043e\u0440\u043e\u043d\u043e\u0439 \u0443\u0433\u043b\u0430 ABC, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0430\u043c \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u043d\u0430\u0439\u0442\u0438; a=AB, b=BC \u0438 \u0443\u0433\u043e\u043b cos\u2220B. \u041f\u043e\u0434\u0441\u0442\u0430\u0432\u0438\u043c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432 \u0444\u043e\u0440\u043c\u0443\u043b\u0443 \u0438 \u043d\u0430\u0439\u0434\u0435\u043c cos\u2220B: AC^2=AB^2+BC^2-2 \\cdot AB [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[50],"tags":[],"class_list":["post-282","post","type-post","status-publish","format-standard","hentry","category-zadanie-15"],"_links":{"self":[{"href":"https:\/\/currconv.ru\/blog\/wp-json\/wp\/v2\/posts\/282","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/currconv.ru\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/currconv.ru\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/currconv.ru\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/currconv.ru\/blog\/wp-json\/wp\/v2\/comments?post=282"}],"version-history":[{"count":0,"href":"https:\/\/currconv.ru\/blog\/wp-json\/wp\/v2\/posts\/282\/revisions"}],"wp:attachment":[{"href":"https:\/\/currconv.ru\/blog\/wp-json\/wp\/v2\/media?parent=282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/currconv.ru\/blog\/wp-json\/wp\/v2\/categories?post=282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/currconv.ru\/blog\/wp-json\/wp\/v2\/tags?post=282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}