Hello.

I'm currently doing chapter reviews for my final exam, and I've come across a trigonometric identity that I have seen before, but don't recall how to verfiy. If you can give me any help and explain it, it will be greatly appreciated. The identity is below.

$\displaystyle \sqrt{\frac{1-sin\theta}{1+sin\theta}}=\frac{1-sin\theta}{|cos\theta|}$

Thank you for your time.

Bryan