# How do you calculate #arcsin -1#?

##### 1 Answer

Nov 5, 2015

#### Explanation:

So, ** archsin**(-1), also written as

**Note:** Inverse of sine is restricted to quadrants 1 and 4 (

Okay, so we know the restrictions now and that we are looking for what

And that would be

*Solving these questions* involves an understanding of the Unit Circle, the restrictions for each inverse function, and understanding the quadrants and what is negate and positive.

Drawing for better understanding...