(cos(x/2)/(根号1+sinx))+(sin(x/2)/根号(1-cosx)),x属于(3/2π,2π)
(cos(x/2)/(根号1+sinx))+(sin(x/2)/根号(1-cosx)),x属于(3/2π,2π)
已知sin(3π-x)-cos(5π+x)=1/2-(根号下3)/2,其中x属于(0,π),求sinx,cosx,x的值
cosx+根号3sinx=2cos(x-π/3)
(1)已知sinx+cosx=根号2/2,求sin^4x+cos^4x
已知函数f(x)=2根号3sinx.cosx+cos^2x-sin^2x-1
根号2cos(x-π/2)怎么=sinx+cosx
y=2sinx/根号下1-cos方x+cosx/根号下1-sin方x求值域
求证sinx-cosx=根号2sin(x-π/4)
化简:{(1+sinx+cosx)[sin(x/2)-cos(x/2)}/根号下的(2+2cosx)
(1+tanx)/(1-tanx)=3+2根号2,求(sin x+cosx)^2-(cos^3x)/sinx
若sinX+cosX=根号2,求sin^3X+cos^3X的值
已知函数f(x)=根号3sinx/2cosx/2-cos2x/2+1/2,x属于[0,π/2]f(x)跟号3/3求cos