精选优质文档-倾情为你奉上高中常用三角函数公式两角和公式sin(A+B) = sinAcosB+cosAsinB sin(A-B) = sinAcosB-cosAsinB cos(A+B) = cosAcosB-sinAsinB cos(A-B) = cosAcosB+sinAsinB tan(A+B) =tan(A-B) =cot(A+B) =cot(A-B) =倍角公式tan2A =Sin2A=2SinACosACos2A = Cos2A-Sin2A=2Cos2A-1=1-2sin2A半角公式sin()=cos()=tan()=cot()= tan()=诱导公式 sin(-a) = -sinacos(-a) = cosasin(-a) = cosacos(-a) = sinasin(+a) = cosacos(+a) = -sinasin(-a) = sinacos(-a) = -cosasin(+a) = -sinacos(+a) = -
