1. Integral help

How do you integrate $\int cos^2(x) dx$

2. Originally Posted by looseenz2
How do you integrate $\int cos^2(x) dx$
Hint: $\cos^2x=\tfrac{1}{2}+\tfrac{1}{2}\cos\!\left(2x\ri ght)$

Can you proceed?

3. Ahh yes, I see it now. Thank you! =]