SOLUTION: 2sin^2(x) + 9cos(x) = -3 Find all solutions of the given equation. Help please?? How can you factor?

Algebra ->  Trigonometry-basics -> SOLUTION: 2sin^2(x) + 9cos(x) = -3 Find all solutions of the given equation. Help please?? How can you factor?      Log On


   

Question 1060455: 2sin^2(x) + 9cos(x) = -3
Find all solutions of the given equation.
Help please?? How can you factor?
Answer by ikleyn(52798) About Me  (Show Source):
You can put this solution on YOUR website!
.
Your first move is to replace sin%5E2%28x%29 in the equation by 1-cos%5E2%28x%29.