y=sin(x+π/3)+cos(x+π/6)最大值

已知sinx=3/5,x∈(π/2,π),求【sin(x+y)+sin(x-y)】/【cos（x+y）+cos（x-y）】的值 y=sinπx+cosπx的周期 y=2cos(x/4+ π/3)-3sin(x- π/4)y=sin(4x- π/3)-cos(3x+π/2) 1.y=sin(-X+π/6)2.y=cos(-2X+π/3) cos(x-y/2)=-1/9,sin(x/2-y)=2/3,π/2 函数y=sin(x)cos(x+ π/4)+cos(x)sin(x+π/4)的最小正周期是 函数y=sin(2x+α)cos(x+α)-cos(2x+α)sin(x+α)在x=π/3处的导函数为 化简y=sin^2(x)+2sin(x)cos(x)+3cos^2(x) y=cosπx*cos(πx-π/3)+sin^2πx的周期、单调区间、值域 函数Y=sin(2x+π/3)cos(x-π/6)-cos(2x+π/3)sin(x-π/6)的图像的一条对称轴方程是多少 y =(cos^2) x - sin (3^x),求y' 求函数y=cos(9/2π+x)+sin^2x的最大值和最小值还有一题 已知sinx+cosx=1/2,求sin^3x+cos^3x和sin^4x+cos^2x Sin x-sin y=2/3 cos x-cos y=1/2 求cos(x-y) 函数y=sin(3x+π/3)cos(x-π/6)+cos(3x+π/3)cos(x+π/3)的图象的一条对称轴的方 y=4sin(3x+(π/4))+3cos(3x+(π/4)),求周期 y=sin(x+π/3)-根号3*cos(x+π/3)的奇偶性 y=sin(2x-π/4)+cos(3x+π/3)的导数 y=cos(3/π+2x)sin(3/π-2x)的单调增区间