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OpenStudy (anonymous):
Find all solutions to the equation in the interval [0, 2π). cos 2x - cos x = 0 1. 0, 2pi/3, 4pi/3 2. pi/6, 5pi/6, 3pi/2 3. 0, pi/2, 7pi/6, 11pi/6 4. No solution I think it is the first choice? :)
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