2sin(0.25πx-0.75π)+8-2sin(0.25πx-0.25π)-6的化简过程

2sin(0.25πx-0.75π)+8-2sin(0.25πx-0.25π)-6的化简过程 sin^2(π/3-x)+sin^2(π/6+x) 2sin(x+π/4)sin(x-π/4)=? sin^2(π/4 +x) sin(πx/2)求导 化简 sin²x+sin²(x+2π/3)+sin²(x-2π/3) 化简：2sin(πx/8+π/4)+sin(-πx/8+π/4)= f(x)=1-2sin^2(x+π/8)+2sin(x+π/8)cos(x+π/8) 求证:(sin 2x /(1-cos 2x) )·(sin x /(1+sin x))=tan (π/4-x/2). sin(x+π/4) 化简sin（2π+x）cos（π-x）sin（π-x）/cos（x-π）sin（-π-x）sin（π+x） f(x)=（1+cotx)sin^2x-2sin(x+π/4)sin(x-π/4)还有一题, 已知函数f(x)=(1+1 anx)sin^2x+m sin(x+π/4)sin(x-π/4) 已知-π/2＜x＜0,sin x+cos x=1/5求sin 2x+2 sin 判断下列函数的奇偶性 f(x)=[sin(π/2+x)cos(π/2-x)tan(-x+3π)]/[sin(7π-x)tan(8π-x)] sin(x+π/3)用诱导公式化简如题sin(2x+π/3)和3sin(2x+π/3) 已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x) 已知sin(x+π/6)=1/4,求sin(5π/6-x)+sin^2(π/3-x)