化简 sinx+sin(x+2π/3)+cos(x+5π/6）

f(x)=2sinx*sin(x+π/3) 化简 sinx>sin(2π/3-x)（0 化简：（sinx）^2+(sin（x+π/3))^2+(sin(x+2π/3))^2 求X解集：sinx=2sin(π/3-x) 化简{sin(π+x)}/1+cos(3π-x)根号下(tanx-sinx)/(tanx+sinx) 化简sin(x+60)+2sinx-60 解方程：sinx=2sin(π/3-x) |sin(x+π/2)|-|sinx|求导过程? 化简sinx+sin(x+2π/3)+cos(x+5π/6） 化简 sinx+sin(x+2π/3)+cos(x+5π/6） f(x)=[2sin(x+π/3)+sinx]cosx-根号3sin2x,化简 sinx+cosx/sinx-cosx=2,则sin(x-5π)sin(3π/2-x)=? 化简f(x)=4sinx*sin^2（(π+2x）/4)+（cosx+sinx）（cosx-sinx） sinx+sin(x+2/3π)+sin(x-2/3π) 化简（根号3）/2sinx+1/2cosx=sin（x+π/6）, 如何把函数y=(sinx+sin(x-2π/3))化简, S(1-sin^2x)d(sinx)为什么=sinx-1/3sin^3x? 化简[sin^2(x)]/(sinx-cosx)-(sinx+cosx)/[tan^2(x)-1]-sinx