Solve the equation sin 2x + cos x = 0 on the interval [0, 2π). Use exact values where possible or give approximate solutions correct to four decimal places.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 70E
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Solve the equation sin 2x + cos x = 0 on the interval [0, 2π). Use exact values where possible or give approximate solutions correct to four decimal places.

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