\u4e09\u89d2\u51fd\u6570\u7684\u65e9\u671f\u7814\u7a76\u53ef\u4ee5\u8ffd\u6eaf\u5230\u53e4\u4ee3\uff0c\u4f46\u73b0\u4ee3\u4f7f\u7528\u7684\u4e09\u89d2\u51fd\u6570\u662f\u5728\u4e2d\u4e16\u7eaa\u53d1\u5c55\u8d77\u6765\u7684\u3002\u516c\u5143\u524d\u4e8c\u4e16\u7eaa\u7684\u559c\u5e15\u6070\u65af\u548c\u6258\u5bc6\u52d2\u4e3a\u4e16\u754c\u4e0a\u7b2c\u4e00\u5f20\u6b63\u5f26\u8868\u7684\u521b\u9020\u505a\u51fa\u8d21\u732e\uff0c\u7b2c\u4e00\u5f20\u5f26\u8868\u53d1\u8868\u4e4b\u540e\u4f59\u5f26\u8868\u3001\u6b63\u5207\u8868\u76f8\u7ee7\u800c\u51fa\u3002<\/p>\n
\u4e09\u89d2\u51fd\u6570\u8bf1\u5bfc\u516c\u5f0f<\/p>\n
\u8bf1\u5bfc\u516c\u5f0f\u662f\u6307\u4e09\u89d2\u51fd\u6570\u4e2d\uff0c\u5229\u7528\u5468\u671f\u6027\u5c06\u89d2\u5ea6\u6bd4\u8f83\u5927\u7684\u4e09\u89d2\u51fd\u6570\uff0c\u8f6c\u6362\u4e3a\u89d2\u5ea6\u6bd4\u8f83\u5c0f\u7684\u4e09\u89d2\u51fd\u6570\u7684\u516c\u5f0f\u3002<\/p>\n
1\u3001\u4efb\u610f\u89d2\u03b1\u4e0e-\u03b1\u7684\u4e09\u89d2\u51fd\u6570\u503c\u4e4b\u95f4\u7684\u5173\u7cfb<\/p>\n
sin(-\u03b1)=-sin\u03b1<\/p>\n
cos(-\u03b1)=cos\u03b1<\/p>\n
tan(-\u03b1)=-tan\u03b1<\/p>\n
cot(-\u03b1)=-cot\u03b1<\/p>\n
2\u3001\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\uff1a<\/p>\n
sin(\u03c0+\u03b1)=-sin\u03b1<\/p>\n
cos(\u03c0+\u03b1)=-cos\u03b1<\/p>\n
tan(\u03c0+\u03b1)=tan\u03b1<\/p>\n
cot(\u03c0+\u03b1)=cot\u03b1<\/p>\n
3\u3001\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\uff1a<\/p>\n
sin(\u03c0-\u03b1)=sin\u03b1<\/p>\n
cos(\u03c0-\u03b1)=-cos\u03b1<\/p>\n
tan(\u03c0-\u03b1)=-tan\u03b1<\/p>\n
cot(\u03c0-\u03b1)=-cot\u03b1<\/p>\n
4\u3001\u8bbe\u03b1\u4e3a\u4efb\u610f\u89d2\uff0c\u7ec8\u8fb9\u76f8\u540c\u7684\u89d2\u7684\u540c\u4e00\u4e09\u89d2\u51fd\u6570\u7684\u503c\u76f8\u7b49\uff1a<\/p>\n
sin(2k\u03c0+\u03b1)=sin\u03b1(k\u2208Z)<\/p>\n
cos(2k\u03c0+\u03b1)=cos\u03b1(k\u2208Z)<\/p>\n
tan(2k\u03c0+\u03b1)=tan\u03b1(k\u2208Z)<\/p>\n
cot(2k\u03c0+\u03b1)=cot\u03b1(k\u2208Z)<\/p>\n
5\u3001\u5229\u7528\u516c\u5f0f\u4e00\u548c\u516c\u5f0f\u4e09\u53ef\u4ee5\u5f97\u52302\u03c0-\u03b1\u4e0e\u03b1\u7684\u4e09\u89d2\u51fd\u6570\u503c\u4e4b\u95f4\u7684\u5173\u7cfb\uff1a<\/p>\n
sin(2\u03c0-\u03b1)=-sin\u03b1<\/p>\n
cos(2\u03c0-\u03b1)=cos\u03b1<\/p>\n
tan(2\u03c0-\u03b1)=-tan\u03b1<\/p>\n
cot(2\u03c0-\u03b1)=-cot\u03b1<\/p>\n
\u4e09\u89d2\u51fd\u6570\u662f\u4e0d\u662f\u53ea\u9002\u7528\u4e8e\u76f4\u89d2<\/p>\n
\u4e0d\u662f\u53ea\u80fd\u7528\u4e8e\u76f4\u89d2\u4e09\u89d2\u5f62\uff0c\u4e09\u89d2\u51fd\u6570\u516c\u5f0f\u5bf9\u4e8e\u4efb\u610f\u89d2\u5ea6\uff0c\u90fd\u6709\u5176\u503c\uff1b\u76f8\u5bf9\u5e94\u7684\u51fd\u6570\u503c\u3002\u53ea\u662f\u5bf9\u4e8e\u76f4\u89d2\u4e09\u89d2\u5f62\uff0c\u4e09\u89d2\u51fd\u6570\u6709\u4e00\u4e2a\u660e\u663e\u7684\u63a8\u7406\u5de5\u7a0b\uff0c\u4fbf\u4e8e\u7406\u89e3\u3002<\/p>\n
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\u4e09\u89d2\u51fd\u6570\u516c\u5f0f\u80cc\u8bf5\u53e3\u8bc0<\/p>\n
\u4e09\u5341\u3001\u56db\u4e94\u3001\u516d\u5341\u5ea6\uff0c\u4e09\u89d2\u51fd\u6570\u8bb0\u7262\u56fa\u3002<\/p>\n
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