- #1

- 164

- 0

## Homework Statement

trying to integrate this:

[tex]\int^{\theta}_{\theta_{0}} \sqrt{\frac{1-cos(\theta)}{cos(\theta_{0}) - cos(\theta)}d\theta[/tex]

## Homework Equations

My book tells me to let theta = pi - 2gamma and then simplify from there but I'm just not seeing that ! any hints? is there a trig identity that I'm missing ? (the only thing I see is to change the sign of the cosines but I don't see where that gets me).