sin^2(∏/3-x)+sin^2(∏/6+x)=?
三角等式求证:cos^6x+sin^6x=1-3sin^2x+3sin^4x
已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x)
s = 2*sin(x)-sin(2*x)+2/3*sin(3*x)-1/2*sin(4*x)+2/5*sin(5*x)
求导f(x) = cos(3x) * cos(2x) + sin(3x) * sin(2x).
化简!f(x)=sin(pai-x)cos(3/2pai+x)+sin(pai+x)sin(3/2pai-x)
已知tan=2,求(cos x+sin x)/(cos x-sin x)+sin^2x
已知Sin(2x+pi/3)=1/3,求Sin(5Pi/6-4x),
1.函数y=sin(x+∏/3)sin(x+∏/2)的最小正周期T=____
(1-(sin^4x-sin^2xcos^2x+cos^4x)/sin^2x +3sin^2x
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
已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)=sin(2x-π/6) ,
化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x)