# Math Help - Trig derivative proof?

1. ## Trig derivative proof?

Prove that $\frac{d}{dx}(csc x) = -csc x cot x$

Ho do I prove that?

2. Originally Posted by yoman360
Prove that $\frac{d}{dx}(csc x) = -csc x cot x$

Ho do I prove that?
Note that $\csc x=\frac{1}{\sin x}$.

Now apply the quotient rule.

Have a shot at it, and report back if you still have problems!

3. Originally Posted by Chris L T521
Note that $\csc x=\frac{1}{\sin x}$.

Now apply the quotient rule.

Have a shot at it, and report back if you still have problems!
Wow I couldn't believe it was that easy. Thanks so much