Math  /  Trigonometry

QuestionSolve the equation for xx, where xx is in radians. State the exact solutions, if any, that lie in the interval [0,2π)[0,2 \pi). If the equation has no solutions, respond with DNE. 2cos2xcosx=12 \cos ^{2} x-\cos x=1
Separate multiple solutions with a comma.

Studdy Solution
The solutions are 00, 2π3\frac{2\pi}{3}, and 4π3\frac{4\pi}{3}.

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