\u6b63\u5f26\u51fd\u6570\u4e0e\u4f59\u5f26\u51fd\u6570\u662f\u9ad8\u4e2d\u6570\u5b66\u5b66\u4e60\u7684\u91cd\u70b9\uff0c\u4e5f\u662f\u9ad8\u8003\u7684\u91cd\u8981\u8003\u70b9\uff0c\u6b63\u5f26\u51fd\u6570\u662f\u4e00\u79cd\u5468\u671f\u6027\u51fd\u6570\uff0c\u901a\u5e38\u7528sin\uff08x\uff09\u6765\u8868\u793a\uff0c\u6b63\u5f26\u51fd\u6570\u7684\u5b9a\u4e49\u53ef\u4ee5\u901a\u8fc7\u4e09\u89d2\u5f62\u6765\u89e3\u91ca\uff0c\u6b63\u5f26\u503c\u7b49\u4e8e\u4e00\u4e2a\u9510\u89d2\u5bf9\u8fb9\u4e0e\u659c\u8fb9\u7684\u6bd4\u503c\uff0c\u56e0\u6b64\uff0c\u6b63\u5f26\u51fd\u6570\u53ef\u4ee5\u8868\u793a\u4e3a\uff1asin\uff08x\uff09=\u5bf9\u8fb9\/\u659c\u8fb9\u3002<\/p>\n
sin45\u5ea6\u7b49\u4e8e\u591a\u5c11<\/p>\n
sin45\u00b0=0.707106781<\/p>\n
sin\u662f\u6b63\u5f26\uff0c\u662f\u5728\u76f4\u89d2\u4e09\u89d2\u5f62\u4e2d\u4e00\u4e2a\u89d2\u7684\u5bf9\u8fb9\u4e0e\u659c\u8fb9\u7684\u6bd4\u503c\uff0cCOS\u662f\u4f59\u5f26\uff0c\u662f\u89d2\u7684\u90bb\u76f4\u89d2\u8fb9\u4e0e\u659c\u8fb9\u7684\u6bd4\u503c\u3002\u53ef\u4ee5\u76f4\u63a5\u6839\u636e\u4e09\u89d2\u51fd\u6570\u7684\u5b9a\u4e49\u8ba1\u7b97\uff0c\u5047\u8bbe45\u5ea6\u89d2\u5bf9\u5e94\u7684\u76f4\u89d2\u8fb9\u8fb9\u957f\u662f1,\u659c\u8fb9\u8fb9\u957f\u4e3a\u221a2,\u5219\uff1a<\/p>\n
sin45\u00b0=1\/\u221a2=\u221a2\/2\uff08\u5bf9\u8fb9\u6bd4\u659c\u8fb9\uff09\uff0c<\/p>\n
cos45\u00b0=1\/\u221a2=\u221a2\/2\uff08\u90bb\u8fb9\u6bd4\u659c\u8fb9\uff09\uff0c<\/p>\n
tan45\u00b0=1\/1=1\uff08\u5bf9\u8fb9\u6bd4\u90bb\u8fb9\uff09\u3002<\/p>\n
\u6b63\u5f26\u51fd\u6570\u6700\u5927\u503c\u6700\u5c0f\u503c\u600e\u4e48\u6c42<\/p>\n
\u6839\u636e\u4e09\u89d2\u51fd\u6570\u6b63\u5f26\u51fd\u6570y=sinx\u7684\u7279\u70b9\uff0c\u5176\u5b9a\u4e49\u57dfx\u7684\u53d6\u503c\u8303\u56f4\u4e3a\uff08-\u221e\uff0c+\u221e\uff09\uff0c\u5176\u503c\u57dfy\u7684\u53d6\u503c\u8303\u56f4\u4e3a[-1,+1]\uff0c\u5373y\u7684\u6700\u5927\u503c\u4e3a1\uff0c\u6700\u5c0f\u503c\u4e3a-1\u3002<\/p>\n
\u5f53x\u53d6\u5f27\u5ea6\u503c[-\u03c0\/2,\u03c0\/2]\u65f6\u5373\u89d2\u5ea6\u503c[-90?,90?]\u65f6y\u4e3a\u5355\u8c03\u589e\u51fd\u6570\uff0c\u4e14\u5f53x=-\u03c0\/2\u65f6y=-1\uff0c\u5f53x=\u03c0\/2\u65f6y=1\uff1b\u5f53x\u53d6\u5f27\u5ea6\u503c[\u03c0\/2,3\u03c0\/2]\u65f6\u5373\u89d2\u5ea6\u503c[90?,270?]\u65f6y\u4e3a\u5355\u8c03\u51cf\u51fd\u6570\uff0c\u4e14\u5f53x=\u03c0\/2\u65f6y=1\uff0c\u5f53x=3\u03c0\/2\u65f6y=-1\u3002<\/p>\n
\u7531\u4e8e\u6b63\u5f26\u51fd\u6570\u5177\u6709\u5468\u671f\u6027\uff0c\u5728\u6bcf\u4e2a\u5468\u671f\u5185\u90fd\u6709\u4e00\u6bb5\u5355\u8c03\u589e\u533a\u95f4\u548c\u4e00\u6bb5\u5355\u8c03\u51cf\u533a\u95f4\uff0c\u4e14\u5468\u671f\u4e3a3\u03c0\/2-\uff08-\u03c0\/2\uff09=2\u03c0\u3002<\/p>\n
\u82e5\u53d6k\u4e3a\u6574\u6570\uff0c\u5219\u5f53x=\uff082k-1\/2\uff09\u03c0\u65f6y\u53d6\u6700\u5c0f\u503c-1\uff0c\u5f53x=\uff082k+1\/2\uff09\u03c0\u65f6y\u53d6\u6700\u5927\u503c1\u3002<\/p>\n
\u6b63\u5f26\u548c\u4f59\u5f26\u51fd\u6570\u7684\u56fe\u50cf\u53ca\u6027\u8d28<\/p>\n
\u6b63\u5f26\u51fd\u6570\u548c\u4f59\u5f26\u51fd\u6570\u7684\u56fe\u50cf\u90fd\u662f\u5468\u671f\u51fd\u6570\uff0c\u5176\u4e2d\u6b63\u5f26\u51fd\u6570\u7684\u5468\u671f\u662f2\u03c0\uff0c\u800c\u4f59\u5f26\u51fd\u6570\u7684\u5468\u671f\u4e5f\u662f2\u03c0\u3002<\/p>\n
\u57280\u52302\u03c0\u7684\u533a\u95f4\u5185\uff0c\u6b63\u5f26\u51fd\u6570\u7684\u56fe\u50cf\u662f\u4e00\u4e2a\u4e0a\u4e0b\u6446\u52a8\u7684\u6ce2\u5f62\uff0c\u4ece\u6700\u4f4e\u70b9\u5f00\u59cb\uff0c\u7ecf\u8fc7\u6781\u5927\u503c\u540e\u518d\u5230\u8fbe\u6700\u4f4e\u70b9\u3002<\/p>\n
\u800c\u4f59\u5f26\u51fd\u6570\u7684\u56fe\u50cf\u5219\u662f\u4e00\u4e2a\u5de6\u53f3\u6446\u52a8\u7684\u6ce2\u5f62\uff0c\u4ece\u6700\u9ad8\u70b9\u5f00\u59cb\uff0c\u8fc7\u96f6\u70b9\u540e\u5230\u8fbe\u6700\u4f4e\u70b9\u3002<\/p>\n
\u6b64\u5916\uff0c\u6b63\u5f26\u51fd\u6570\u548c\u4f59\u5f26\u51fd\u6570\u7684\u5b9a\u4e49\u57df\u548c\u503c\u57df\u90fd\u662f\u5b9e\u6570\u96c6\u5408\u3002<\/p>\n
\u4e24\u4e2a\u51fd\u6570\u4e4b\u95f4\u7684\u5173\u7cfb\u662f\uff0c\u6b63\u5f26\u51fd\u6570\u548c\u4f59\u5f26\u51fd\u6570\u7684\u56fe\u50cf\u76f8\u4e92\u5782\u76f4\u3002<\/p>\n
\u8fd9\u4e24\u4e2a\u51fd\u6570\u5728\u6570\u5b66\u548c\u7269\u7406\u5b66\u4e2d\u6709\u5e7f\u6cdb\u7684\u5e94\u7528\uff0c\u4f8b\u5982\u5728\u6ce2\u52a8\u3001\u5468\u671f\u53d8\u5316\u548c\u7535\u8def\u4e2d\u3002<\/p>\n
\u5728\u4e09\u89d2\u5b66\u4e2d\uff0c\u8fd9\u4e24\u4e2a\u51fd\u6570\u4f5c\u4e3a\u57fa\u7840\u51fd\u6570\uff0c\u914d\u5408\u5176\u4ed6\u51fd\u6570\u53ef\u4ee5\u5f97\u5230\u66f4\u590d\u6742\u7684\u4e09\u89d2\u51fd\u6570\uff0c\u8fd9\u4e9b\u51fd\u6570\u4e5f\u662f\u5e94\u7528\u6781\u5e7f\u7684\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6b63\u5f26\u51fd\u6570\u4e0e\u4f59\u5f26\u51fd\u6570\u662f\u9ad8\u4e2d\u6570\u5b66\u5b66\u4e60\u7684\u91cd\u70b9\uff0c\u4e5f\u662f\u9ad8\u8003\u7684\u91cd\u8981\u8003\u70b9\uff0c\u6b63\u5f26\u51fd\u6570\u662f\u4e00\u79cd\u5468\u671f\u6027\u51fd\u6570\uff0c\u901a\u5e38\u7528sin\uff08x\uff09\u6765\u8868\u793a … \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-3661","post","type-post","status-publish","format-standard","hentry","category-shuxue"],"_links":{"self":[{"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/posts\/3661","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/comments?post=3661"}],"version-history":[{"count":1,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/posts\/3661\/revisions"}],"predecessor-version":[{"id":3662,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/posts\/3661\/revisions\/3662"}],"wp:attachment":[{"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/media?parent=3661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/categories?post=3661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.114158.com\/xueke\/wp-json\/wp\/v2\/tags?post=3661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}