Find all solutions of the equation in the interval [0, 2?). 2 cos^2 x - 3 cos x - 2 = 0 Write your answer in radians in terms of ?. If there is more than one solution, separate them with commas.
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Then, the equation becomes: 2y^2 - 3y - 2 = 0 This is a quadratic equation, which we can solve for y. We can factor the equation as: (2y + 1)(y - 2) = 0 Show more…
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