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## Homework Statement

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

## Homework Equations

## 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.