化简cosx-根号3cos(30°+x)+cos(x+60°)
化简cosx-根号3cos(30°+x)+cos(x+60°)
化简cosx-√3 cos(30°+x)+cos(x+60°)
化简cos(15°-x)-根号3cos(15°+x)+cos(45°+x)
cosx+根号3sinx=2cos(x-π/3)
cos(x-派\6)=-根号3\3,则cosx+cos(x-派\3)=
f(x)=sinx/4*cosx/4+根号3cos^2*x/4化简
化简cos(X-30°)+sin(X+30°)+cosX+1
化简f(x)=cosx+cos(x+派/3).
化简cos(x+3o.)CoSx+Sin(x+30.)Sinx
已知函数f(x)=2sinx*cosx+2根号3cos^2x-根号3
化简 根号3sinXcosX+cos*2X
化简cos(2π/3-x)+cos(2π/3+x)+cosx