若函数f(x)=2sin(2x-π/3+A)是偶函数,则A的值为什么是5π/6?

已知函数f(x)=sin^2(x-π/6)+sin^2(x+π/6),若x∈[-π/3,π/6],求函数f(x)的值域 已知函数f(x)=2根号3sin平方x-sin（2x-π/3) f(x)=2根号3sin^2x-sin(2x-π/3)若x属【-π/2,0】,求函数f（x）的最大值 设函数f(x)=-x^2+x+7,若不等式f(3+2sinθ) 函数F(X)=sin x+sin(x+π/2),x∈R 若f(x)=3/4,求sin2α的值 .若函数f(x)sin(2x+m)-π 设函数 f(x)=sin(2x+y),(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f x=SIN(2X+φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+φ)(-π 已知函数F(X)=SIN(2X+φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+φ)(-π 设函数f(x)=sin(2x+ φ)(-π 设函数f(x)=sin(2x+φ)(-π 函数f(x)=sin(2x+a) -π