Sinπ/3Tanπ/3+tanπ/6COSπ/6－Tanπ/4COSπ/2

Sinπ/3Tanπ/3+tanπ/6COSπ/6－Tanπ/4COSπ/2 sin(2π-α)tan(α+3π)tan(-α-π)/tan(α-3π)cos(π-α) 若α∈(0,π/6) 比较tan(sinα),tan(cosα),tan(tanα)的大小 tan(a+π/4)=2,则cos2a+3sin^2a+tan a= cosπ/3+tanπ/4+3tan²π/6+sinπ/2+cosπ+sin3π/2等于?. cosπ|3-tanπ|4+3|4tan²π|6+cos²π|6-sinπ|4 化简（tan@+1比tan@）cos@的平方等于 （用特值法）例三分之π1.tan@ 2.sin@3cos@ 4.1比tan@ 若a属于(0,π/2)试比较tanα、tan(tanα)、tan(sinα) 求值tan(π／6-θ)+tan(π／6+θ)+√3tan(π／6-θ)tan(π／6+θ) tan2a*tan(π/6-a)+tan2a*tan(π/3-a)+tan(π/6-a)tan(π/3-a) tan=3,π tan(-20/3π) 已知tanα=3tan(α+β),β=π/6,则sin(2α-β)的值 tanα=3tan(α+β),β=π/6,求sin(2α+β)的值 已知α∈(0,π|2）,2tanα+3sinβ=7,且tanα-6sinβ=1,求sinα的值 已知α,β∈(0,π/2),且2tanα+3sinβ=7,tanα-6sinβ=1,则sinα= 在三角形abc中若cos（π/2+A)sin（3π/+B)tan (C-π) 化简[sin(π-α)cos(3π-α)tan(-α-π)]/[tan(4π-α)sin(5π+α)]