化简 1/2cos x-根号3/2sin x
化简 1/2cos x-根号3/2sin x 根3sin x+cos x
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
化简:3/2cos x-(根号3)/2sin x
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
已知sin X+cos X=m,|m|小于等于根号2且|m|不等于1,求sin X^3+cos X^3,sin X^4+
化简sin(x+PI/3)+2sin(x-PI/3)-根号3*cos(2pi/3-1)
已知函数f(x)=sin平方+根号3 sin x cos x+2cos平方x,x∈R
已知f(x)=cos^4x-2根号3sinxcosx-sin^4x 化简
已知函数f(x)=cos^2x-sin^2x+2根号3sinxcosx+1
化简(1)√3sin x+cos x (2)√2(sin x-cos x) (3)√2cos x-√6sin x
sin(x+派/3)+2sin(x-派/3)-根号3cos(2派/3-x)
sin(x+π/3)+2sin(x-π/3)-根号3cos(2π/3-x)