\u6700\u521d\u63a5\u89e6\u5230\u7684\u4e09\u89d2\u51fd\u6570\u662f\u4e3a\u4e86\u5c06\u4e09\u89d2\u5f62\u8fb9\u957f\u548c\u89d2\u5ea6\u4e4b\u95f4\u7684\u5173\u7cfb\u5efa\u7acb\u8054\u7cfb\uff0c\u4ece\u76f4\u89d2\u4e09\u89d2\u5f62\u4e2d\u6f14\u5316\u6765\u7684\u3002\u4e09\u89d2\u51fd\u6570\u662f\u521d\u4e2d\u6570\u5b66\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u7ae0\u8282\uff0c\u4e5f\u662f\u4e2d\u8003\u4e2d\u5fc5\u8003\u7684\u5185\u5bb9\u3002\u6211\u4eec\u5728\u80cc\u6982\u5ff5\u7684\u65f6\u5019\uff0c\u8111\u6d77\u91cc\u4e00\u5b9a\u8981\u51fa\u76f4\u89d2\u4e09\u89d2\u5f62\u7684\u60c5\u666f\uff0csin\u7b49\u4e8e\u5bf9\u8fb9\u6bd4\u659c\u8fb9\uff0ccos\u7b49\u4e8e\u90bb\u8fb9\u6bd4\u659c\u8fb9\uff0ctan\u7b49\u4e8e\u5bf9\u8fb9\u6bd4\u90bb\u8fb9\u3002<\/p>\n
sin\u662f\u4ec0\u4e48\u8fb9\u6bd4\u4ec0\u4e48\u8fb9<\/p>\n
\u6b63\u5f26\uff08sin\uff09\u7b49\u4e8e\u5bf9\u8fb9\u6bd4\u659c\u8fb9\uff1bsinA=a\/c<\/p>\n
\u4f59\u5f26\uff08cos\uff09\u7b49\u4e8e\u90bb\u8fb9\u6bd4\u659c\u8fb9\uff1bcosA=b\/c<\/p>\n
\u6b63\u5207\uff08tan\uff09\u7b49\u4e8e\u5bf9\u8fb9\u6bd4\u90bb\u8fb9\uff1btanA=a\/b<\/p>\n
\u4f59\u5207\uff08cot\uff09\u7b49\u4e8e\u90bb\u8fb9\u6bd4\u5bf9\u8fb9\uff1bcotA=b\/a<\/p>\n
sin cos tan\u57fa\u7840\u77e5\u8bc6<\/p>\n
\u8981\u7b80\u5355\u7406\u89e3\u6b63\u5f26\u51fd\u6570\uff08sin\uff09\u3001\u4f59\u5f26\u51fd\u6570\uff08cos\uff09\u548c\u6b63\u5207\u51fd\u6570\uff08tan\uff09\uff0c\u6211\u4eec\u53ef\u4ee5\u501f\u52a9\u4e8e\u76f4\u89d2\u4e09\u89d2\u5f62\u6765\u8fdb\u884c\u76f4\u89c2\u7406\u89e3\u3002<\/p>\n
\u6b63\u5f26\u51fd\u6570\uff08sin\uff09\uff1a\u5728\u76f4\u89d2\u4e09\u89d2\u5f62\u4e2d\uff0c\u6b63\u5f26\u51fd\u6570\u8868\u793a\u9510\u89d2\u03b8\u7684\u5bf9\u8fb9\uff08\u4e0e\u03b8\u89d2\u76f8\u5bf9\u7684\u8fb9\uff09\u4e0e\u659c\u8fb9\u7684\u6bd4\u503c\u3002\u53ef\u4ee5\u7528\u7b26\u53f7sin\u03b8\u8868\u793a\uff0c\u5176\u4e2d\u03b8\u4e3a\u9510\u89d2\u3002\u5728\u4e00\u4e2a\u5468\u671f\u5185\uff082\u03c0\uff09\uff0c\u6b63\u5f26\u51fd\u6570\u7684\u503c\u57280\u52301\u4e4b\u95f4\u53d8\u5316\u3002\u5f53\u03b8=90\u5ea6\u65f6\uff0csin\u03b8=1\uff1b\u5f53\u03b8=30\u5ea6\u65f6\uff0csin\u03b8=1\/2\u3002<\/p>\n
\u4f59\u5f26\u51fd\u6570\uff08cos\uff09\uff1a\u4f59\u5f26\u51fd\u6570\u8868\u793a\u9510\u89d2\u03b8\u7684\u90bb\u8fb9\uff08\u4e0e\u03b8\u89d2\u76f8\u90bb\u4e14\u4e0d\u662f\u659c\u8fb9\u7684\u8fb9\uff09\u4e0e\u659c\u8fb9\u7684\u6bd4\u503c\u3002\u53ef\u4ee5\u7528\u7b26\u53f7cos\u03b8\u8868\u793a\uff0c\u5176\u4e2d\u03b8\u4e3a\u9510\u89d2\u3002\u5728\u4e00\u4e2a\u5468\u671f\u5185\uff082\u03c0\uff09\uff0c\u4f59\u5f26\u51fd\u6570\u7684\u503c\u5728-1\u52301\u4e4b\u95f4\u53d8\u5316\u3002\u5f53\u03b8=90\u5ea6\u65f6\uff0ccos\u03b8=0\uff1b\u5f53\u03b8=60\u5ea6\u65f6\uff0ccos\u03b8=1\/2\u3002<\/p>\n
\u6b63\u5207\u51fd\u6570\uff08tan\uff09\uff1a\u6b63\u5207\u51fd\u6570\u8868\u793a\u9510\u89d2\u03b8\u7684\u5bf9\u8fb9\u4e0e\u90bb\u8fb9\u7684\u6bd4\u503c\u3002\u53ef\u4ee5\u7528\u7b26\u53f7tan\u03b8\u8868\u793a\uff0c\u5176\u4e2d\u03b8\u4e3a\u9510\u89d2\u3002\u5728\u4e00\u4e2a\u5468\u671f\u5185\uff082\u03c0\uff09\uff0c\u6b63\u5207\u51fd\u6570\u7684\u503c\u5728-\u221e\u5230\u221e\u4e4b\u95f4\u53d8\u5316\u3002\u5f53\u03b8=90\u5ea6\u65f6\uff0ctan\u03b8\u4e0d\u5b58\u5728\uff1b\u5f53\u03b8=45\u5ea6\u65f6\uff0ctan\u03b8=1\u3002<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u76f4\u89c2\u7406\u89e3\uff0c\u6211\u4eec\u53ef\u4ee5\u7b80\u5355\u5730\u638c\u63e1sin\u3001cos\u548ctan\u51fd\u6570\u7684\u57fa\u672c\u6982\u5ff5\u548c\u6027\u8d28\u3002\u5728\u5b9e\u9645\u95ee\u9898\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u7684\u89d2\u5ea6\u548c\u9700\u6c42\u6765\u8fd0\u7528\u8fd9\u4e9b\u51fd\u6570\u3002<\/p>\n
sin\u4e0d\u540c\u89d2\u5ea6\u7684\u8868\u503c<\/p>\n
sin1=0.01745240643728351 sin2=0.03489949670250097 sin3=0.05233595624294383<\/p>\n
sin4=0.0697564737441253 sin5=0.08715574274765816 sin6=0.10452846326765346<\/p>\n
sin7=0.12186934340514747 sin8=0.13917310096006544 sin9=0.15643446504023087<\/p>\n
sin10=0.17364817766693033 sin11=0.1908089953765448 sin12=0.20791169081775931<\/p>\n
sin13=0.22495105434386497 sin14=0.24192189559966773 sin15=0.25881904510252074<\/p>\n
sin16=0.27563735581699916 sin17=0.2923717047227367 sin18=0.3090169943749474<\/p>\n
sin19=0.3255681544571567 sin20=0.3420201433256687 sin21=0.35836794954530027<\/p>\n
sin22=0.374606593415912 sin23=0.3907311284892737 sin24=0.40673664307580015<\/p>\n
sin25=0.42261826174069944 sin26=0.4383711467890774 sin27=0.45399049973954675<\/p>\n
sin28=0.4694715627858908 sin29=0.48480962024633706 sin30=0.49999999999999994<\/p>\n
sin31=0.5150380749100542 sin32=0.5299192642332049 sin33=0.544639035015027<\/p>\n
sin34=0.5591929034707468 sin35=0.573576436351046 sin36=0.5877852522924731<\/p>\n
sin37=0.6018150231520483 sin38=0.6156614753256583 sin39=0.6293203910498375<\/p>\n
sin40=0.6427876096865392 sin41=0.6560590289905073 sin42=0.6691306063588582<\/p>\n
sin43=0.6819983600624985 sin44=0.6946583704589972 sin45=0.7071067811865475<\/p>\n
sin46=0.7193398003386511 sin47=0.7313537016191705 sin48=0.7431448254773941<\/p>\n
sin49=0.7547095802227719 sin50=0.766044443118978 sin51=0.7771459614569708<\/p>\n
\u4ec0\u4e48\u662f\u4e09\u89d2\u51fd\u6570<\/p>\n
\u5728\u76f4\u89d2\u4e09\u89d2\u5f62\u4e2d\uff0c\u4e09\u89d2\u51fd\u6570\u662f\u89d2\u5ea6\u7684\u51fd\u6570\uff0c\u5b83\u4eec\u63cf\u8ff0\u4e86\u89d2\u5ea6\u548c\u4e09\u89d2\u5f62\u8fb9\u957f\u4e4b\u95f4\u7684\u5173\u7cfb\u3002\u5728\u4e09\u89d2\u51fd\u6570\u4e2d\uff0c\u6700\u5e38\u89c1\u7684\u4e09\u4e2a\u51fd\u6570\u662f\u6b63\u5f26\u51fd\u6570\u3001\u4f59\u5f26\u51fd\u6570\u548c\u6b63\u5207\u51fd\u6570\u3002\u8fd9\u4e9b\u51fd\u6570\u5206\u522b\u8868\u793a\u4e86\u89d2\u5ea6\u7684\u6b63\u5f26\u503c\u3001\u4f59\u5f26\u503c\u548c\u6b63\u5207\u503c\u3002\u6b63\u5f26\u51fd\u6570\u901a\u5e38\u7528sin\u8868\u793a\uff0c\u4f59\u5f26\u51fd\u6570\u7528cos\u8868\u793a\uff0c\u6b63\u5207\u51fd\u6570\u7528tan\u8868\u793a\u3002<\/p>\n
\u4e09\u89d2\u51fd\u6570\u5177\u6709\u4e00\u4e9b\u91cd\u8981\u7684\u6027\u8d28\u3002\u9996\u5148\uff0c\u5b83\u4eec\u662f\u5468\u671f\u51fd\u6570\uff0c\u5373\u5b83\u4eec\u7684\u503c\u5728\u4e00\u5b9a\u8303\u56f4\u5185\u91cd\u590d\u51fa\u73b0\u3002\u6b63\u5f26\u51fd\u6570\u548c\u4f59\u5f26\u51fd\u6570\u7684\u5468\u671f\u662f2\u03c0\uff0c\u800c\u6b63\u5207\u51fd\u6570\u7684\u5468\u671f\u662f\u03c0\u3002\u5176\u6b21\uff0c\u4e09\u89d2\u51fd\u6570\u5177\u6709\u4e00\u4e9b\u91cd\u8981\u7684\u6052\u7b49\u5f0f\uff0c\u5982\u6b63\u5f26\u51fd\u6570\u548c\u4f59\u5f26\u51fd\u6570\u7684\u548c\u5dee\u6052\u7b49\u5f0f\u3001\u500d\u89d2\u6052\u7b49\u5f0f\u3001\u534a\u89d2\u6052\u7b49\u5f0f\u7b49\u3002\u8fd9\u4e9b\u6052\u7b49\u5f0f\u5728\u89e3\u51b3\u4e09\u89d2\u51fd\u6570\u7684\u95ee\u9898\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n
\u4e09\u89d2\u51fd\u6570\u5728\u51e0\u4f55\u3001\u7269\u7406\u548c\u5de5\u7a0b\u4e2d\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u5728\u51e0\u4f55\u4e2d\uff0c\u4e09\u89d2\u51fd\u6570\u88ab\u7528\u6765\u8ba1\u7b97\u4e09\u89d2\u5f62\u7684\u5404\u79cd\u5c5e\u6027\uff0c\u5982\u89d2\u5ea6\u3001\u8fb9\u957f\u3001\u9762\u79ef\u7b49\u3002\u5728\u7269\u7406\u4e2d\uff0c\u4e09\u89d2\u51fd\u6570\u88ab\u7528\u6765\u63cf\u8ff0\u6ce2\u52a8\u3001\u632f\u52a8\u3001\u5468\u671f\u6027\u8fd0\u52a8\u7b49\u73b0\u8c61\u3002\u5728\u5de5\u7a0b\u4e2d\uff0c\u4e09\u89d2\u51fd\u6570\u88ab\u7528\u6765\u8bbe\u8ba1\u5efa\u7b51\u7269\u3001\u6865\u6881\u3001\u673a\u68b0\u7b49\uff0c\u4ee5\u53ca\u8ba1\u7b97\u5404\u79cd\u5de5\u7a0b\u95ee\u9898\u3002\u6b64\u5916\uff0c\u4e09\u89d2\u51fd\u6570\u8fd8\u88ab\u7528\u6765\u89e3\u51b3\u5404\u79cd\u6570\u5b66\u95ee\u9898\uff0c\u5982\u5fae\u79ef\u5206\u3001\u7ebf\u6027\u4ee3\u6570\u3001\u6982\u7387\u7edf\u8ba1\u7b49\u3002<\/p>\n
\u4e09\u89d2\u51fd\u6570\u7684\u57fa\u7840\u516c\u5f0f<\/p>\n
tan \u03b1=sin \u03b1\/cos \u03b1<\/p>\n
sin^2 \u03b1+cos^2 \u03b1=1<\/p>\n
tan \u03b1 *tan \u03b1 \u7684\u90bb\u89d2=1<\/p>\n
\u9510\u89d2\u4e09\u89d2\u51fd\u6570\u516c\u5f0f<\/p>\n
\u6b63\u5f26\uff1a sin \u03b1=\u2220\u03b1\u7684\u5bf9\u8fb9\/\u2220\u03b1 \u7684\u659c\u8fb9<\/p>\n
\u4f59\u5f26\uff1acos \u03b1=\u2220\u03b1\u7684\u90bb\u8fb9\/\u2220\u03b1\u7684\u659c\u8fb9<\/p>\n
\u6b63\u5207\uff1atan \u03b1=\u2220\u03b1\u7684\u5bf9\u8fb9\/\u2220\u03b1\u7684\u90bb\u8fb9<\/p>\n
\u4f59\u5207\uff1acot \u03b1=\u2220\u03b1\u7684\u90bb\u8fb9\/\u2220\u03b1\u7684\u5bf9\u8fb9<\/p>\n
\u4e8c\u500d\u89d2\u516c\u5f0f<\/p>\n
sin2A=2sinA\u00b7cosA<\/p>\n
cos2A=cos^2 A-sin^2 A=1-2sin^2 A=2cos^2 A-1<\/p>\n
tan2A=\uff082tanA\uff09\/\uff081-tan^2 A\uff09<\/p>\n
\u8bf1\u5bfc\u516c\u5f0f<\/p>\n
\u516c\u5f0f\u4e00\u8bbe\u03b1\u4e3a\u4efb\u610f\u89d2\uff0c\u7ec8\u8fb9\u76f8\u540c\u7684\u89d2\u7684\u540c\u4e00\u4e09\u89d2\u51fd\u6570\u7684\u503c\u76f8\u7b49\uff1asin\uff082k\u03c0\uff0b\u03b1\uff09=sin\u03b1cos\uff082k\u03c0\uff0b\u03b1\uff09=cos\u03b1tan\uff082k\u03c0\uff0b\u03b1\uff09=tan\u03b1cot\uff082k\u03c0\uff0b\u03b1\uff09=cot\u03b1<\/p>\n
\u516c\u5f0f\u4e8c\u8bbe\u03b1\u4e3a\u4efb\u610f\u89d2\uff0c\u03c0+\u03b1\u7684\u4e09\u89d2\u51fd\u6570\u503c\u4e0e\u03b1\u7684\u4e09\u89d2\u51fd\u6570\u503c\u4e4b\u95f4\u7684\u5173\u7cfb\uff1asin\uff08\u03c0\uff0b\u03b1\uff09=-sin\u03b1cos\uff08\u03c0\uff0b\u03b1\uff09=-cos\u03b1tan\uff08\u03c0\uff0b\u03b1\uff09=tan\u03b1cot\uff08\u03c0\uff0b\u03b1\uff09=cot\u03b1<\/p>\n
\u516c\u5f0f\u4e09\u4efb\u610f\u89d2\u03b1\u4e0e-\u03b1\u7684\u4e09\u89d2\u51fd\u6570\u503c\u4e4b\u95f4\u7684\u5173\u7cfb\uff1asin\uff08-\u03b1\uff09=-sin\u03b1cos\uff08-\u03b1\uff09=cos\u03b1tan\uff08-\u03b1\uff09=-tan\u03b1cot\uff08-\u03b1\uff09=-cot\u03b1<\/p>\n
\u516c\u5f0f\u56db\u5229\u7528\u516c\u5f0f\u4e8c\u548c\u516c\u5f0f\u4e09\u53ef\u4ee5\u5f97\u5230\u03c0-\u03b1\u4e0e\u03b1\u7684\u4e09\u89d2\u51fd\u6570\u503c\u4e4b\u95f4\u7684\u5173\u7cfb\uff1asin\uff08\u03c0-\u03b1\uff09=sin\u03b1cos\uff08\u03c0-\u03b1\uff09=-cos\u03b1tan\uff08\u03c0-\u03b1\uff09=-tan\u03b1cot\uff08\u03c0-\u03b1\uff09=-cot\u03b1<\/p>\n
\u516c\u5f0f\u4e94\u5229\u7528\u516c\u5f0f-\u548c\u516c\u5f0f\u4e09\u53ef\u4ee5\u5f97\u52302\u03c0-\u03b1\u4e0e\u03b1\u7684\u4e09\u89d2\u51fd\u6570\u503c\u4e4b\u95f4\u7684\u5173\u7cfb\uff1asin\uff082\u03c0-\u03b1\uff09=-sin\u03b1cos\uff082\u03c0-\u03b1\uff09=cos\u03b1tan\uff082\u03c0-\u03b1\uff09=-tan\u03b1cot\uff082\u03c0-\u03b1\uff09=-cot\u03b1<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6700\u521d\u63a5\u89e6\u5230\u7684\u4e09\u89d2\u51fd\u6570\u662f\u4e3a\u4e86\u5c06\u4e09\u89d2\u5f62\u8fb9\u957f\u548c\u89d2\u5ea6\u4e4b\u95f4\u7684\u5173\u7cfb\u5efa\u7acb\u8054\u7cfb\uff0c\u4ece\u76f4\u89d2\u4e09\u89d2\u5f62\u4e2d\u6f14\u5316\u6765\u7684\u3002\u4e09\u89d2\u51fd\u6570\u662f\u521d\u4e2d\u6570\u5b66\u4e2d\u975e … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-1566","post","type-post","status-publish","format-standard","hentry","category-shuxue"],"views":597,"_links":{"self":[{"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/posts\/1566","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/comments?post=1566"}],"version-history":[{"count":1,"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/posts\/1566\/revisions"}],"predecessor-version":[{"id":1567,"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/posts\/1566\/revisions\/1567"}],"wp:attachment":[{"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/media?parent=1566"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/categories?post=1566"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.114158.com\/z\/wp-json\/wp\/v2\/tags?post=1566"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}