(tanπ/4+tanα)/(1-tanπ/4tanα)怎么解

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(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)