2sinxcosx-cos(2x-π/6)化简

2sinxcosx-cos(2x-π/6)化简 化简f(x)=cos^2(x+π/12)+sinxcosx 已知函数f（x）=cos^2x+sinxcosx,x∈Rf（π/6） cos^2+2sinxcosx+sin^2x 化简2*(sinxcosx-cos平方x)+1 化简 根号3sinXcosX+cos*2X y=sinxcosx+cos(2x)化简 化简:(cos*2x-0.5)/(sinxcosx) sin^2xtanx+(cos^2x/tanx)+2sinxcosx-1+cos/sinxcosx y=(cos^2x)/(sinxcosx-sin^2x),(0 sin²X-sinxcosx+2cos²x=化简 sin²x+sinxcosx+2cos²x= 化简cos^4x-2sinxcosx-sin^4x 2sin平方x +cos平方x+3sinxcosx化简 已知tan(π-x)=2,则2/(sin^2x-sinxcosx-cos^2x)=? 已知函数f(x)=1+sinxcosx,g(x)=[cos(x+(π/12))]^2 求证 1+2sinxcosx/sin^2x-cos^2x=sin^2x-cos^2x/1-2sinxcosx 化简函数f(x)=2cosx.cos(x-π/6)-√3(sinx)^2+sinxcosx 0分