化简f(x)=2sin(x+30°)-2cosx

已知函数f(x)=2sin(π-x)cosx 已知函数f(x)=2sin(派-x)cosx 化简F(X)=2（COSX）^2+2 sin x cos x+1 化简f(x)=sin(x/2+π/12)乘以cos(x/2+π/12)-cosx/2乘以cosx/2 设f=[sin(2/x)]=1+cosx,求f(x),f[cos(2/x)]. f(x)=2cos*sin(x+π/3)-^3sin^2x+sinx*cosx 已知函数f（x）=2cosx*sin(x+π/3)-√3sin^2x+sinx*cosx 已知函数f(x)=2cosx*sin(x+π/3)-根号3sin^2x+sinx*cosx 设f（x）=2cosx.sin（x+π/3)-根号3 sin平方x+sinx.cosx 已知函数f（x）=(sin^2x+cosx+1)/(cosx+1), 化简f(x)=2cos2x+sin^2x-4cosx f(X)=2cos2x+sin²x-4cosx化简