[cot(θ+4π)·cos(θ+π)·sin^2(θ+3π)]/[tan(π+θ)·cos^3(-π-θ)]
[cot(θ+4π)·cos(θ+π)·sin^2(θ+3π)]/[tan(π+θ)·cos^3(-π-θ)]
化简[cot(θ+4π)cos(θ+π)sin²(θ+3π)]/[tan(π+θ)cos²(-π-θ
化简sin(3π+a)tan(a-π)cot(π+a)/tan(2π-a)cos(π-a)
化简sin(θ-5π)•cot(π2-θ)•cos(8π-θ)tan(3π-θ)•tan(θ-32π)•sin(-θ-4
【sin(α+2kπ)+cos(π/2+α)+tan(3π-α)】/【sin(α-π)+cos(α-π/2)+cot(π
sin(θ -5π)/tan(3π-θ)*cot(π/2-θ)/tan(θ -3/2π)*cos(8π-θ)/sin(-
化简:(sin^2(a+π)cos(π+a)cot(-a-2π))/tan(π+a)cos^3(π+a)
若tan(cosθ)×cot(sinθ)>0,指出θ所在象限
化简【1+sinθ-cosθ/1+sinθ+cosθ】+cot(θ/2)
化简sin(2π-α)*tan(π+α)*cot(-α-π)/cos(π-α)*tan(3π-α)(急)
化简 f(α)=sin(π—α) cos(2π—α)tan(-α+3/2π)/cot(-α-π)sin(-π-α)
(1)sin765(2)cos(-1020)(3)tan(97π/6)(4)cot(-39π/6)(5)sin(-120