Question

When tanx=1, what does x equal?

Answer 1

`x=npi+(pi)/4`, where `n` is an integer.

Explanation:

`tanx=1`, but as `tan(pi/4)=1`

However, as period of tan function is `pi` and the function repeats after every `pi`,

the general solution for `tanx=1=tan(pi/4)` is

`x=npi+(pi)/4`, where `n` is an integer.