cos(π/6+3x)=sin（π/2-（π/6+3x））=sin(π/3-3x)

已知函数f(x)=cos(2x-π/3）+2sin(x-π/4）sin(x+π/4)=sin(2x-π/6) , 求证 tan（2π-X）sin（-2π-X）cos（6π-X）/ sin（X+3π/2)*cos（X+3π/2)=-ta 已知f(x)=-1/2+sin(π/6-2x)+cos(2x-π/3）+cos平方x. 函数f(x)=cos2x+cos(x+π/3)+sin(x+π/6)+3sin^2x的最小值 已知函数f(x)=2cos(x-π/6)sin(x+π/6)-√3*(sin(x-π/6))^2+sin(x-π/6)c 函数f(x)=根号3sinωx+cosωx(ω＞0）怎样变为f(x)=2sin(ωx+π/6） f(x)=2cos*sin(x+π/3)-^3sin^2x+sinx*cosx 化简2sin^2[(π/4)+x]+根号3（sin^x-cos^x）-1 已知函数f(x)= [sin(2π-x)sin(π+x)cos(-x-π)] ／[2cos(π-x)sin(3π-x)] 已知函数f(x)=cos(π/6-2x)+cos(2x+π/6)+sin(2x+π/3)-sin(π/3-2x). 设函数f(x)=2+sin(3x+π/12)cos(x+π/6)+cos(3x+π/12)sin(x+π/6) 2sin(2πx)cos(2πx)+根号（3）sin(2πx)=0 0