已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x)
已知sin(x+π/6)=1/3,求sin(5π/6-x)+sin^2(π/3-x)
已知Sin(2x+pi/3)=1/3,求Sin(5Pi/6-4x),
化简:1、sin(x-π/3)-cos(x+π/6)+√3cosx=?2、已知,sinα+sinβ=√2/2,求cosα
已知sinα是方程5x²-7x-6=0的根,求[sin(-α+3π/2)sin(π-α)tan²(2
已知函数f(x)=根号3sin(2x-π/6)+2sin的平方(x-π/12)(x∈R)(1)求函数f(x)
已知sin(x+π/6)=-3/5,求sin²(π/3-x)-sin(5π/6-x)的值
已知.sin (x+兀/6)=1/4.求:sin(5/6兀)+sin的平方(兀/3-x)
已知函数f(x)=2cos(x-π/6)sin(x+π/6)-√3*(sin(x-π/6))^2+sin(x-π/6)c
已知函数f(x)=cos(2x-π/3)+2sin(x-π/4)sin(x+π/4)=sin(2x-π/6) ,
已知函数f(x)=sin^2 x+2根号3sinxcosx+sin(x+π/4)sin(x-π/4),x属于R,求f(x
已知sinα(x+π/6)=1/4,则sin(5π/6-x)+sin(π/3-x)的平方=?
1.已知sin(π/6-x)=1/4,sin(π/6+2x)=?