Solving for Theta in 2bcosθ=2sinθ-1 Quadratic Equation

[Vitani11]

Homework Statement

2bcosθ=2sinθ-1 where b is a constant

Homework Equations

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.

 

[PeroK]

Homework Statement

2bcosθ=2sinθ-1 where b is a constant

Homework Equations

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.

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

 

[Vitani11]

Awesome, got it. Thanks!