How many numbers between 0 and solve the equation (A) None

Chapter 5, Problem 5.1.1.92

(choose chapter or problem)

Multiple Choice How many numbers between 0 and \(2\pi\) solve the equation \(3 \cos ^{2} x+\cos x=2\)

(A) None.                           (B) One.

(C) Two.                            (D) Three.

(E) Four.

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