sin(x+π) sin(x+3/2π)怎么化简?

sin(x+π) sin(x+3/2π)怎么化简? 已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/2) 化简为sin的形式 Sin(x+π/3)+2Sin(x-π/3)-根号3乘以Cos(2π/3 -x ) 化简化简 化简函数fx=sin(2x+π/6)+2sin^2x y=sin(x+π/3)+2定义域怎么求? 已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x) 高一三角函数化简 sin^2(x-30)+sin^2(x+30)-sin^2(x) sin(x+π/3)+2sin(x-π/3)-根号3cos(2π/3-x) 解不等式sin(2x+π/3) sin(3π/2-x)化简 高中数学：已知函数f(x)=2sin(x+π/2).sin(x+7π/3)- 函数f(x)＝sin(x+π3)sin(x+π2)