Find all values of x in the interval 0<=x<=2pi for which 2sin^2(x)+sin(x)-1=0.
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.