Answer
No solution, as $-1 \leq cos\theta \leq 1$
Work Step by Step
$4cos\theta - 1 = 3cos\theta + 4$
$cos\theta = 4 + 1$
$cos\theta = 5$
No solution, as $-1 \leq cos\theta \leq 1$
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 6 - Section 6.1 - Solving Trigonometric Equations - 6.1 Problem Set - Page 325: 20
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