# Integral help

• July 28th 2009, 02:27 PM
shoff14
Integral help
I don't know how to use the codes, so you will have to bear with me a little

Integrate

(cot x)^2 dx

Everything I tried just doesn't work. I am not sure what trig identity to use to get to the answer.

Thanks for the help
• July 28th 2009, 02:36 PM
Plato
Quote:

Originally Posted by shoff14
Integrate (cot x)^2 dx

What is the derivative of $-x-\cot(x)?$
• July 28th 2009, 02:39 PM
justchillin
Use $1- csc^{2}x = cot^{2}x$

OR you can use the suggestion above.
• July 28th 2009, 03:05 PM
shoff14
Thanks, I was thinking to much