Question

The range of the function 1-tanx/1+tanx???

Answer 1

Range is `R`.

Explanation:

Put `1 = tan (pi/4)`
You will observe that its the formula of tan(A-B).
Simplifying it, you wil have :-

`(1-tanx)/(1+tanx) = tan(pi/4 + x)`

So the function is now reduced to `tan theta`.
And Range of `tan theta` is `R`.
Hence the answer.

Hope it helps :)