# Homework Help: Trig equality

1. Nov 21, 2011

### Kuma

1. The problem statement, all variables and given/known data

I'm stuck on a question that results in this equality

sin 2x = sin 2y

how do I solve that for x or y?
the only identity is the double angle one I can use I think but I don't know how that would help.

2. Relevant equations

3. The attempt at a solution

2. Nov 21, 2011

### LCKurtz

$2x = 2y + n\pi$