Question

How do you find the exact value of `tan^-1(1)`?

Answer 1

`45^0`

Explanation:

because you know that
`tan(45)=1`

so `tan^-1(1)`equal to the `theta`

which here equals to 45

so you are getting it by your background of the value of theta and just reverse, and I don't think there is a direct or simple way to do that.

or simply by using calculator