若θ∈(-π,0),cosθ/2=√3/3,则sinθ=
若(sinθ+cosθ)/(sinθ-cosθ)=2,则sin(θ-5π)*sin(3π/2-θ)等于?
若θ∈(-π,0),cosθ/2=√3/3,则sinθ=
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=?
若满足sinθ-2cosθ/sinθ+3cosθ=2,则sinθ*cosθ的值等于多少?
sinθ-cosθ=1/2,则sin^3θ-cos^3θ=?.
(sinθ+cosθ)/(sinθ-cosθ)=2,则sin(θ-5π)*sin(3π/2-θ)=
已知sinθ+cosθ=√2 /3,(0
若sin θ-cos θ 分之sin θ+cos θ=2 则sin θcos θ 是
若tanθ=2,则sinθ+2cosθ2sinθ−3cosθ
已知(4sinθ-2cosθ)/(3sinθ+5cosθ)=6/11,求5cos^2θ/(sin^2θ+2sinθcos
已知sinθ+√3cosθ=2cos(θ-φ),求tanφ.(0