# Homework Help: Solving for theta?

1. Jan 14, 2017

### Vitani11

1. The problem statement, all variables and given/known data
2bcosθ=2sinθ-1 where b is a constant

2. Relevant equations

3. The attempt at a solution
I squared both sides, foiled, and changed the cosθ2 to a 1-sin2θ. Was told I need to solve a quadratic for sine? I don't see it.

2. Jan 14, 2017

### PeroK

How can you not end up with a quadratic in $\sin \theta$?

3. Jan 14, 2017

### Vitani11

Awesome, got it. Thanks!