Question 1094868
2sin^2 - 1 = 0
2sin^2 = 1
sin^2 = 1/2
sin = sqrt(2)/2
theta = 45, 135 degs
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sin = -sqrt(2)/2
theta = 225, 315 degs
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Theta = pi/4, 3pi/4, 5pi/4, 7pi/4