sin(3π/2-x)化简
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
化简sin(2x+π/3)-(根号3)sin²x+sinxcosx+(根号3)/2
化简:(sinα-cosα)^2+sin4α/2cos2α 化简:sin^2x+sin^2(x+2π/3)+sin^2(
化简!f(x)=sin(pai-x)cos(3/2pai+x)+sin(pai+x)sin(3/2pai-x)
化简sin(2π+x)cos(π-x)sin(π-x)/cos(x-π)sin(-π-x)sin(π+x)
化简 1/2cos x-根号3/2sin x 根3sin x+cos x
化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)
化简sin(3π-x)cos(x-3/2)cos(4π-x)/tan(x-5π)cos(π/2+x)sin(x-5/2π
已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x)
化简sin(π+π/3)+2sin(x-π/3)-根号下3 *cos(2π/3-x)