# How do you simplify #(1 - cos^2 theta)/(1 + sin theta) = sin theta#?

##### 1 Answer

The solutions for this equation are

#### Explanation:

First, it's a good idea to use the following identity:

Thus, your equation can bei simplified like follows:

... multiply both sides with the denominator...

If you graph the

graph{sin x [-10, 10, -2, 2]}

So, your equation is **not** an identity (and thus it can't be proven as such), but it does have solutions, namely