已知sin(x+π/6)sin(x-π/6)=11/20,则tanx的值为?

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) 已知函数f（x）=［2sin（x-π/6）+√3sin x］cos x+sin^2x,x∈R 已知F(X)=根号3COS^2 X+SIN XCOS X-2SIN X*SIN(X-π/6),求F(X)的最大值 sin^2(π/3-x)+sin^2(π/6+x) 已知函数f(x)=sin(2x+π/6)+sin（2x+π/6）+2cos²x 已知函数f(x)=(1+1 anx)sin^2x+m sin(x+π/4)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 已知函数f(x)=2sin(ax-π/6)sin(ax+π/3) 已知sin(π/6+x)=3/5,π/3 已知sin(π/4+x)sin(π/4-x)=1/6,x(π/2,π),则sin4x=? 已知sin(x-π/6)=1/2,0 已知y=sin(2x+π/6) 求值域 已知sin(x+π/6)=1/3,则sin(5/6π-x)+cos2(π/3-x)=? 已知sin(x+π/3)=1/4,求sin(2π/3-x)+cos²(π/6-x) 已知函数f(x)=2根号3sin平方x-sin（2x-π/3) 已知x+y+z=π,证明sin(x+y)+sin(y+z)+sin(z+x)≥sin2x+sin2y+sin2z