Which is equivalent to sin^-1(tan(pi/4)) ? give your answer in radians.

We are to find the value of 

First we evaluate tan(π/4). The value of tan(π/4) is 1. 

So, 



sin(π/2) = 1
So,


Thus, we can write:

radians.

So, the answer to this question is π/2 radians.

The correct answer is: 2

We need the pictures of the graphs