化简:[tan(5/4)π+tan(5/12)π]/[1-tan(5/12)π]
化简:tan(π/8)+1/tan(π/12)
tan(π/12)+1/tan(π/12)=啥?
1.已知tan(a+p)=2/5,tan(p-π/4)=1/4,则tan(a+π/4)=?2.已知sina=-1/3,a
在tan(α+ β)=2/5,tan(β -π/4)=1/4,则tan(α+π/4)的值为?
若tan(A+B)=2/5,tan(A-π/4)=1/4,则tan(B+π/4)等于多少?
tan(α+β)=3/5,tan(β-π/4)=1/4,则tan(α+π/4)值为
若(1-tanα)/(1+tanα)=4+√5,则tan(π/2-2α)的值
若tan(α+π/4)=-3/5,求tan(α-π/4)的值
(1)tan(-1/5 π)与tan(-3/7 π)(2).
正切函数比大小!tan(-13/4π)与tan(-17/5π)
tan(a+π4
化简:{[tan(π/4+a)-tan(π/4-a)]/tan2a} *tan(π/4+a)