化简：sin(x+60°)+2sin(x-60°)-根号下3cos(120°-x)

化简sin(-2x) 化简 cos^2(x)*sin^2(x)-sin^2(x) 化简 cos^(2)(x)*sin^(2)(x)-sin^(2)(x) 化简sin^4x-sin^2x+cos^2x 化简:sin^4 x-sin^2 x+cos^2 x 化简(sin x+cos x-1)(sin x-cos x+1)/sin 2x 化简[1-(sin^4 x-sin^2 xcos^2 x+cos^4 x)]/(sin^2 x)+3sin^2 x 化简(sin^2 x/sin x-cosx)-(sin x+cosx/tan^2 x-1) 1-2sinx*sin(60+x)sin(60-x) 化简sin(x+60)+2sinx-60 sin(x^2)/sin^2x 求导 化简：sin(x+60°)+2sin(x-60°)-根号下3cos(120°-x) 化简：sin（x+60°）+2sin（x-60°）-√3cos（120°-x）= 化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x 化简 sin²x+sin²(x+2π/3)+sin²(x-2π/3) 化简sin²x sin^2(x) -con^2(x) 化简 化简sin^4x+cos^2x