三角函数公式汇总

三角函数公式汇总1.1cottan,sincsc1,seccos12.tancossin,cotsincos3.1cossin22,22sectan1,22csccot14.k2：sin)2sin(k,cos)2cos(k,tan)2tan(k2：cos)2sin(,sin)2cos(,cot)2tan(5.：sin)sin(,cos)cos(,tan)tan(2：cos)2sin(,sin)2cos(,cot)2tan(6.：sin)sin(,cos)cos(,tan)tan(23：cos)23sin(,sin)23cos(,cot)23tan(7.2：sin)2sin(,cos)2cos(,tan)2tan(23：cos)23sin(,sin)23cos(,cot)23tan(：sin)sin(,cos)cos(,tan)tan(8.sin()sincoscossin,cos()coscossinsin9.tantantan()1tantan,tantantantan1tan()tantantan()(1tantan)10.cossin22sin=2tan1tan2，tan22tan1tan22222cos2cossin2cos112sin=22tan1tan111.1cossin22,1coscos22,1cossin1costan21cos1cossin12.22cos1sin2,22cos1cos2，2sin2cos12，2cos2cos1213．22cos2sinsin114．22222222cossin(cossin)sin()abababababab15．22222222sinsincoscostantan1sinsincoscossincostan1abcababc16．22221cos2sin21cos2sinsincoscoscos2sin2sin(2)222abcabcABCABC17.sinsin21cossina,sinsin21sincosacoscos21coscosa,coscos21sinsina18.sinsin2sincos22,sinsin2cossin22coscos2coscos22,coscos2sinsin22