化简 √2/4sin x+√6/4cos x
化简(1)√3sin x+cos x (2)√2(sin x-cos x) (3)√2cos x-√6sin x
函数f(x)=-√2(sin2x+π/4)+6 sin x cos x-2cos²x+1
化简[1-(sin^4x-sin^2cos^2x+cos^4x)/(sin^2)]+3sin^2x
化简 √2/4sin(π/4-x)+√6/4cos(π/4-x)
化简 √2/4sin x+√6/4cos x
sin x + cos x = √2 * sin (x + Pi/4)
化简f(x)=(1+√2*cos(2x-π/4))/sin(π/2-x)
已知函数f(x)=-4cos^2 x+4√(3)sin x cos x+5,x属于R
已知函数f(x)=2sin(x/4)cos(x/4)+(√3)cos(x/2),求
三角函数证明及化简题1.证明sin^6x+cos^6x=(sin^2x+cos^2x)(cos^4x-cos^2xsin
证明sin^2(x)+cos^2(x+30)+sin(x)cos(x+30)=3/4
用cos x表示sin^4 x -sin^2 x +cos^2 x