化简sin(60°+2x)*cos(60°-2x)
化简(1)√3sin x+cos x (2)√2(sin x-cos x) (3)√2cos x-√6sin x
化简sin(2π+x)cos(π-x)sin(π-x)/cos(x-π)sin(-π-x)sin(π+x)
1.y=cos(2x+60°)+sin x平方.化简.
化简:1+sin(x-360度)cos(x-270度)-2cos平方x
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
化简 cos^2(x)*sin^2(x)-sin^2(x)
化简 cos^(2)(x)*sin^(2)(x)-sin^(2)(x)
证明COS(X+Y)COS(X-Y)=COS^2X-SIN^2Y
sin(sin(sin(sin(x)=cos(cos(cos(cos(x),X等于多少?
化简:1.【(sin^2)(-X-π) *cos(π+X)cosX】/【tan(2π+X) *(cos^3 (-X-π)
Y=sin(x+15度)+根号2cos(x+60度)最大值
cos(2x+派/2)=sin(2x)?