计算:1-tan(5π/12)tan(π/4) ------------------------------- tan(
在tan(α+ β)=2/5,tan(β -π/4)=1/4,则tan(α+π/4)的值为?
tan(α+β)=3/5,tan(β-π/4)=1/4,则tan(α+π/4)值为
若tan(A+B)=2/5,tan(A-π/4)=1/4,则tan(B+π/4)等于多少?
若(1-tanα)/(1+tanα)=4+√5,则tan(π/2-2α)的值
高一三角函数计算求 具体方法!(1)cos310*tan(-108)(2)sin(5π/4)*cos(4π/5)*tan
已知tanα=2,求:(1)tan(α+π4)
tan(π/12)+1/tan(π/12)=啥?
化简:tan(π/8)+1/tan(π/12)
已知tan a=3,求tan(a+π/4),tan(a-π/4)的值?
tan(a-3/π) =2 tan(3/π-B)=2/5 求tan(a+b)=
tan(a-5π)=-tana
tan(a+π4