根号2/4sin(45°-x)+根号6/4cos(45°-x)
化简2sin^2[(π/4)+x]+根号3(sin^x-cos^x)-1
根号下(sin""x+4cos"x)-根号下(cos""x+4sin"x)=?
根号2/4sin(π/4-x)+根号6/4cos(π/4-x) 化简
已知函数f(x)=cos^4(x)+(2根号3)sinxcosx-sin^4(x)
sin(5x)-sin(3x)= 根号2cos(4x)
(1)已知sinx+cosx=根号2/2,求sin^4x+cos^4x
化简sin(x+π/2)分之1+根号二cos(2x-π/4)
求根号2/4sin(π/4-x)+根号6/4cos(π/4-x)的化简,
已知函数f(x)=根号(sin(x/2)^4+4cos(x/2)^2)-根号(cos(x/2)^4+4sin(x/2)^
求化简f(x)=sin^2x+2根号3sin(x+π/4)cos(x-π/4)-cos^2x-根号3
f(x)=sin平方x+2根号3sin(x+π/4)cos(x-π/4)-cos平方x-根号3
已知f(x)=cos^4x-2根号3sinxcosx-sin^4x 化简