\u548c\u5dee\u5316\u79ef\u516c\u5f0f\u662f\u4e09\u89d2\u51fd\u6570\u4e2d\u7684\u4e00\u7ec4\u6052\u7b49\u5f0f\uff0c\u7528\u4e8e\u5c06\u4e24\u4e2a\u4e09\u89d2\u51fd\u6570\u7684\u548c\u6216\u5dee\u8f6c\u5316\u4e3a\u5b83\u4eec\u7684\u79ef\u3002\u5728\u8003\u8bd5\u4e2d\u7ecf\u5e38\u4f1a\u51fa\u73b0\u5173\u4e8e\u8fd9\u4e2a\u77e5\u8bc6\u70b9\u7684\u8003\u9898\uff0c\u6240\u4ee5\u5b66\u751f\u4e00\u5b9a\u8981\u638c\u63e1\u3002<\/p>\n
\u548c\u5dee\u5316\u79ef\u516c\u5f0f\u8bb0\u5fc6\u53e3\u8bc0<\/p>\n
\u548c\u5dee\u5316\u79ef\u516c\u5f0f\u53e3\u8bc0\uff1a<\/p>\n
\u6b63\u5f26\uff0b\u6b63\u5f26\uff0c\u6b63\u5f26\u5728\u524d\u3002<\/p>\n
\u6b63\u5f26\uff0d\u6b63\u5f26\uff0c\u6b63\u5f26\u5728\u540e\u3002<\/p>\n
\u4f59\u5f26\uff0b\u4f59\u5f26\uff0c\u4f59\u5f26\u5e76\u80a9\u3002<\/p>\n
\u4f59\u5f26\uff0d\u4f59\u5f26\uff0c\u4f59\u5f26\u9760\u8fb9\u3002<\/p>\n
\u79ef\u5316\u548c\u5dee\u516c\u5f0f\uff1a<\/p>\n
sin\u03b1\u00b7cos\u03b2=\uff081\/2\uff09[sin\uff08\u03b1+\u03b2\uff09+sin\uff08\u03b1-\u03b2\uff09]<\/p>\n
cos\u03b1\u00b7sin\u03b2=\uff081\/2\uff09[sin\uff08\u03b1+\u03b2\uff09-sin\uff08\u03b1-\u03b2\uff09]<\/p>\n
cos\u03b1\u00b7cos\u03b2=\uff081\/2\uff09[cos\uff08\u03b1+\u03b2\uff09+cos\uff08\u03b1-\u03b2\uff09]<\/p>\n
sin\u03b1\u00b7sin\u03b2=-\uff081\/2\uff09[cos\uff08\u03b1+\u03b2\uff09-cos\uff08\u03b1-\u03b2\uff09]<\/p>\n
\u540c\u89d2\u4e09\u89d2\u51fd\u6570<\/p>\n
\uff081\uff09\u5e73\u65b9\u5173\u7cfb\uff1a<\/p>\n
sin^2\uff08\u03b1\uff09+cos^2\uff08\u03b1\uff09=1<\/p>\n
tan^2\uff08\u03b1\uff09+1=sec^2\uff08\u03b1\uff09<\/p>\n
cot^2\uff08\u03b1\uff09+1=csc^2\uff08\u03b1\uff09<\/p>\n
\uff082\uff09\u79ef\u7684\u5173\u7cfb\uff1a<\/p>\n
sin\u03b1=tan\u03b1*cos\u03b1cos\u03b1=cot\u03b1*sin\u03b1<\/p>\n
tan\u03b1=sin\u03b1*sec\u03b1cot\u03b1=cos\u03b1*csc\u03b1<\/p>\n
sec\u03b1=tan\u03b1*csc\u03b1csc\u03b1=sec\u03b1*cot\u03b1<\/p>\n
\u548c\u5dee\u5316\u79ef\u516c\u5f0f\u901f\u8bb0\u6280\u5de7<\/p>\n
1.\u5f02\u540d\u51fd\u6570\u548c\u5dee\u5316\u79ef\uff1a\u5982\u679c\u4e24\u4e2a\u51fd\u6570\u7684\u540d\u6570\u4e0d\u540c\uff08\u4f8b\u5982sin\u548ccos\uff09\uff0c\u5219\u5b83\u4eec\u4e0d\u80fd\u76f4\u63a5\u76f8\u52a0\u6216\u76f8\u51cf\u3002\u6b64\u65f6\uff0c\u9700\u8981\u5c06\u5176\u4e2d\u4e00\u4e2a\u51fd\u6570\u7528\u8bf1\u5bfc\u516c\u5f0f\u8f6c\u5316\u4e3a\u540c\u540d\u51fd\u6570\uff0c\u7136\u540e\u518d\u8fdb\u884c\u8ba1\u7b97\u3002<\/p>\n
2.\u540c\u540d\u51fd\u6570\u548c\u5dee\u5316\u79ef\uff1a\u5982\u679c\u4e24\u4e2a\u51fd\u6570\u7684\u540d\u6570\u76f8\u540c\uff08\u4f8b\u5982sin\u548csin\uff09\uff0c\u5219\u5b83\u4eec\u7684\u548c\u6216\u5dee\u53ef\u4ee5\u76f4\u63a5\u8f6c\u5316\u4e3a\u5b83\u4eec\u7684\u79ef\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u5982\u679c\u4e24\u4e2a\u51fd\u6570\u7684\u548c\u4e3af\uff08x\uff09\uff0c\u5dee\u4e3ag\uff08x\uff09\uff0c\u5219\u5b83\u4eec\u7684\u79ef\u4e3af\uff08x\uff09g\uff08x\uff09\u3002<\/p>\n
3.\u7b26\u53f7\u548c\u5dee\u5316\u79ef\uff1a\u5982\u679c\u4e24\u4e2a\u51fd\u6570\u7684\u548c\u4e3af\uff08x\uff09\uff0c\u5dee\u4e3ag\uff08x\uff09\uff0c\u5219\u5b83\u4eec\u7684\u79ef\u4e3af\uff08x\uff09g\uff08x\uff09\uff0c\u5176\u4e2d\u7b26\u53f7\u7531\u5dee\u51fd\u6570\u7684\u7b26\u53f7\u51b3\u5b9a\u3002\u5177\u4f53\u6765\u8bf4\uff0c\u5982\u679c\u5dee\u51fd\u6570\u7684\u7b26\u53f7\u4e3a\u6b63\uff0c\u5219\u79ef\u7684\u7b26\u53f7\u4e0e\u548c\u51fd\u6570\u7b26\u53f7\u76f8\u540c\uff1b\u5982\u679c\u5dee\u51fd\u6570\u7684\u7b26\u53f7\u4e3a\u8d1f\uff0c\u5219\u79ef\u7684\u7b26\u53f7\u4e0e\u548c\u51fd\u6570\u7684\u7b26\u53f7\u76f8\u53cd\u3002<\/p>\n
4.\u89d2\u5ea6\u548c\u5dee\u5316\u79ef\uff1a\u5982\u679c\u4e24\u4e2a\u51fd\u6570\u7684\u89d2\u5ea6\u5206\u522b\u4e3aA\u548cB\uff0c\u5219\u5b83\u4eec\u7684\u548c\u4e3aA+B\uff0c\u5dee\u4e3aA-B\u3002\u5982\u679c\u5b83\u4eec\u7684\u548c\u4e3af\uff08x\u5dee\u4e3ag\uff08x\uff09\uff0c\u5219\u5b83\u4eec\u7684\u79ef\u4e3af\uff08x\uff09g\uff08x\uff09\uff0c\u5176\u4e2df\uff08x\uff09\u548cg\uff08x\uff09\u5206\u522b\u662fA+B\u548cA-B\u7684\u4e09\u89d2\u51fd\u6570\u8868\u793a\u5f0f\u3002<\/p>\n
\u901a\u8fc7\u4ee5\u4e0a\u6280\u5de7\uff0c\u53ef\u4ee5\u5feb\u901f\u5730\u5c06\u548c\u5dee\u8f6c\u5316\u4e3a\u79ef\uff0c\u4ece\u800c\u7b80\u5316\u8ba1\u7b97\u3002\u5f53\u7136\uff0c\u8fd9\u4e9b\u6280\u5de7\u9700\u8981\u7ed3\u5408\u5177\u4f53\u7684\u4e09\u89d2\u51fd\u6570\u516c\u5f0f\u8fdb\u884c\u8bb0\u5fc6\u548c\u7ec3\u4e60\uff0c\u624d\u80fd\u771f\u6b63\u638c\u63e1\u548c\u5dee\u5316\u79ef\u516c\u5f0f\u7684\u901f\u8bb0\u65b9\u6cd5\u3002<\/p>\n
\u5e73\u65b9\u5f62\u5f0f\u548c\u5dee\u5316\u79ef\u516c\u5f0f<\/p>\n
\u5e73\u65b9\u548c\u516c\u5f0f\uff1a<\/p>\n
\u5e73\u65b9\u5dee\u516c\u5f0f\uff1a\uff08a+b\uff09\uff08a-b\uff09=a?-b?\u3002<\/p>\n
\u4e09\u89d2\u51fd\u6570\u516c\u5f0f\u4e2d\uff0c\u6709\u4e00\u7ec4\u516c\u5f0f\u88ab\u79f0\u4e3a\u4e09\u89d2\u5e73\u65b9\u5dee\u516c\u5f0f\uff1a<\/p>\n
\u8fd9\u7ec4\u516c\u5f0f\u662f\u5316\u79ef\u516c\u5f0f\u7684\u4e00\u79cd\uff0c\u7531\u4e8e\u9177\u4f3c\u5e73\u65b9\u5dee\u516c\u5f0f\u800c\u5f97\u540d\uff0c\u4e3b\u8981\u7528\u4e8e\u89e3\u4e09\u89d2\u5f62\u3002<\/p>\n
\u901a\u5e38\u662f\u4e00\u4e9b\u6b63\u6574\u6570\u7684\u5e73\u65b9\u4e4b\u548c\uff0c\u6574\u6570\u7684\u4e2a\u6570\u53ef\u4ee5\u662f\u6709\u9650\u4e2a\uff0c\u4e5f\u53ef\u4ee5\u662f\u65e0\u9650\u591a\u3002<\/p>\n
\u4e24\u6570\u548c\uff08\u6216\u5dee\uff09\u7684\u5e73\u65b9\uff0c\u7b49\u4e8e\u5b83\u4eec\u7684\u5e73\u65b9\u548c\uff0c\u52a0\u4e0a\uff08\u6216\u51cf\u53bb\uff09\u5b83\u4eec\u7684\u79ef\u76842\u500d\u5373\u5b8c\u5168\u5e73\u65b9\u516c\u5f0f\u3002<\/p>\n
\u4e0e\uff08a-b\uff09^2=a^2-2ab+b^2\u90fd\u53eb\u505a\u5b8c\u5168\u5e73\u65b9\u516c\u5f0f\u3002\u4e3a\u4e86\u533a\u522b\uff0c\u6211\u4eec\u628a\u524d\u8005\u53eb\u505a\u4e24\u6570\u548c\u7684\u5b8c\u5168\u5e73\u65b9\u516c\u5f0f\uff0c\u540e\u8005\u53eb\u505a\u4e24\u6570\u5dee\u7684\u5b8c\u5168\u5e73\u65b9\u516c\u5f0f\u3002\u8fd9\u4e24\u4e2a\u516c\u5f0f\u7684\u7ed3\u6784\u7279\u5f81\u662f\uff1a<\/p>\n
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