1. The problem statement, all variables and given/known data Find all values of x in the interval 0<=x<=2pi for which 2sin^2(x)+sin(x)-1=0. 2. Relevant equations 3. The attempt at a solution I have no idea. I spent awhile trying to figure it out on my graphics calculator but couldn't figure it out. I have only been told how to solve trig equations where there is 1 trig function, lol. any help would be great thanks.