1. The problem statement, all variables and given/known data Solve sin^2(x) = cos^2(x) over the interval [0,2pi] 3. The attempt at a solution sin^2(x) = cos^2(x) sin^2(x) = 1-sin^2(x) 2sin^2(x) = 1 sin^2(x) = 1/2 = pi/6 sin(x) = sq root 1/2 = sq root pi/6 Unfortunately I am completely lost at this point and am not sure if I did that part correctly. If I did where would I go from here? Any help would be greatly appreciated, including any books where I could find some examples of whatever (or what) this is. Regardless, thank you for your time.