已知:tan(−5π−θ)•cos(θ−2π)•sin(−3π−θ)tan(7π2+θ)•sin(−4π+θ)•cot(
化简sin(θ-5π)•cot(π2-θ)•cos(8π-θ)tan(3π-θ)•tan(θ-32π)•sin(-θ-4
sin(θ -5π)/tan(3π-θ)*cot(π/2-θ)/tan(θ -3/2π)*cos(8π-θ)/sin(-
(2005•闸北区一模)若sinθ+cosθ=−2,则tanθ+cotθ的值为( )
化简[cot(θ+4π)cos(θ+π)sin²(θ+3π)]/[tan(π+θ)cos²(-π-θ
已知tanθ=2,则3sinθ−2cosθsinθ+3cosθ
已知tanθ=3,求(3cosθ-5sin^2θcosθ)/sin(π-θ)的值
tanθ=2,则sin(π2+θ)−cos(π−θ)sin(π2−θ)−sin(π−θ)
已知【2+tan(θ-π)】/【1-tan(2π-θ】=-4,求(sinθ-3cosθ)(cosθ-sinθ)的值
已知tan(θ+π/4)=-2,求cosθ平方+sinθcosθ-1
[cot(θ+4π)·cos(θ+π)·sin^2(θ+3π)]/[tan(π+θ)·cos^3(-π-θ)]
已知f(α)=sin(π−α)•cos(2π−α)•tan(−π−α)sin(−π−α)
已知tanθ+cotθ=2,求sin^3θ-cos^3θ的值