Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN: 9780134217437
Author: Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher: PEARSON
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**Question** Solve the equation \( \cos^3(-\alpha)\tan^2 \alpha + \cos^3(-\alpha) = -\frac{\sqrt{2}}{2} \) given that \( 0 \leq \alpha < 2\pi \). Select the correct answer below: - \( \alpha = \frac{\pi}{4} \) - \( \alpha = \frac{3\pi}{4} \) - \( \alpha = \frac{\pi}{4} \text{ and } \frac{7\pi}{4} \) - \( \alpha = \frac{3\pi}{4} \text{ and } \frac{5\pi}{4} \)
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Transcribed Image Text:**Question** Solve the equation \( \cos^3(-\alpha)\tan^2 \alpha + \cos^3(-\alpha) = -\frac{\sqrt{2}}{2} \) given that \( 0 \leq \alpha < 2\pi \). Select the correct answer below: - \( \alpha = \frac{\pi}{4} \) - \( \alpha = \frac{3\pi}{4} \) - \( \alpha = \frac{\pi}{4} \text{ and } \frac{7\pi}{4} \) - \( \alpha = \frac{3\pi}{4} \text{ and } \frac{5\pi}{4} \)
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