Help Me Integrate sin2(x): Tips & Tricks

[v0id19]

Homework Statement

For whatever reason, I'm having issues integrating sin²(x)

Homework Equations

I can use U-sub, trig-sub, integration by parts, partial fractions, in any combination as needed

The Attempt at a Solution

My brain is failing me, so any hints would be awesome.

 

[Dick]

Use a double angle formula for the last one. cos(2x)=?

 

[miller8605]

i have that in my table of integrals in the back of my calc book. That's where i'd look. heh

 

[v0id19]

sweet it worked :D
thanks a bunch