Help with integration

1. Feb 24, 2005

andrew410

$$\int\frac{1} {cos^2(2y)} dy$$
I've tried u-subbing and integration by parts...and no luck...
It's been a while since Calc 2 and I need some help.
Any help would be great!! thx! :)

2. Feb 24, 2005

stunner5000pt

I dont think you can solve this by u-subsitution or i couldnt think that way because that owuld be too lengthy

Whats the Differential of Tan??

3. Feb 24, 2005

thx...haha