(tanπ/4+tanα)/(1-tanπ/4tanα)怎么解
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(tanπ/4+tanα)/(1-tanπ/4tanα)怎么解
(tanπ/4+tanα)/(1-tanπ/4tanα)怎么解
(tanπ/4+tanα)/(1-tanπ/4tanα)怎么解
是tan(π/4)还是tanπ除以4,如果是前者的话,tanπ/4=1啊,所以原式可以化简为:(1+tanα)/(1-tanα)=1/cosα=secα
(tanπ/4+tanα)/(1-tanπ/4tanα)=tan(π/4+α)
(tanπ/4+tanα)/(1-tanπ/4tanα)怎么解
tanα+1/tanα
2tanα/(1-tanαtanα)=-4/3求tanα
2tanα/(1-tanαtanα)=-4/3求tanα要过程
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tan( x/2+π/4)+tan(x/2-π/4 )=2tanxtan(x/2+π/4)+tan(x/2-π/4)=[tan(x/2)+tan(π/4)]/[1-tan(x/2)tan(π/4)]+[tan(x/2)-tan(π/4)]/[1+tan(x/2)tan(π/4)]=[tan(x/2)+1]/[1-tan(x/2)]+[tan(x/2)-1]/[1+tan(x/2)]=[(tan(x/2)+1)^2-(tan(x/2)-1)^2]/[1-(tan(x
证明tan(α)*tan(β)+tan(β)*tan(γ)+tan(α)*tan(γ)=1 (α+β+γ=π/2)详细一点
证明tanαtanβ+tanαtanγ+tanβtanγ=1,α+β+γ=π/2
已知∠α+∠β+∠γ=π/2 求证tanαtanβ+tanαtanγ+tanβtanγ=1
求证(1)1+tanθ/1-tanθ=tan(π/4+θ) (2)1-tanθ/1+tanθ=tan(π/4-θ)
tan(α+β)=3/5 tan(β-4/π)=1/4 则tan(α+4/π)等于多少
若tan(α+β)=3/5,tan(β-(π)/4)=1/4,则tan(α+(π)/4)=?
tan(α+β)=3/5,tan(β-π/4)=1/4,则tan(α+π/4)
已知tan(α-π/4)=1/3,tan(β+π/4),那么tan(α+β)=
tan(4/π+α)=3 求tanα?
若tanα=-1/3,tan(β-(π/4))=-1/3,则tan(α+β)=