根5cosθ-2根5sinθ+5化简问题
已知(4sinθ-2cosθ)/(3sinθ+5cosθ)=6/11,求5cos^2θ/(sin^2θ+2sinθcos
已知2sinθ+cosθsinθ−3cosθ=−5
2sinθ+cosθ/sinθ-3cosθ=-5,求cos2θ+4sinθ
sin(π-θ)+cos(2π-θ)/cos(5π/2-θ)+sin(3π/2+θ)=2,则sinθcosθ=_____
已知θ为第三象限角,1-sinθcosθ-3cos^2=0则5sin^2θ+3sinθcosθ=?
已知 sin(θ+kπ)=-2cos (θ+kπ) 求 ⑴4sinθ-2cosθ/5cosθ+3sinθ; ⑵(1/4)
1.化简根号2cos x - 根号6sin x2.已知sin(α-β)cosα-cos(β-α)sinα=3/5,β是第
若(sinθ+cosθ)/(sinθ-cosθ)=2,则sin(θ-5π)*sin(3π/2-θ)等于?
(sinθ+cosθ)/(sinθ-cosθ)=2,则sin(θ-5π)*sin(3π/2-θ)=
已知tanθ=3,求(3cosθ-5sin^2θcosθ)/sin(π-θ)的值
已知(2sinθ+cosθ)/sinθ-3cosθ=-5,求下列各式的值
1.已知2sinθ+cosθ/sinθ-3cosθ=-5,求下列各式的值