# Trigonometric Integral

1. Feb 2, 2006

### Physter

Haven't done integrals in such a long time and now I'm having some trouble with this question here. Any help would be appreciated. Thanks

2. Feb 2, 2006

### arildno

Using the double angle formula as you do here is of course legitimate, however, there is a simpler choice:
Substitute $u=\sin(t)$ instead.

3. Feb 2, 2006

### Physter

This looks better I hope?

4. Feb 2, 2006

### Jameson

+C of course :). But yes, that's correct.

5. Feb 2, 2006

### Physter

^^^Arggg I always forget the constant. Thanks