Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 2 - Acute Angles and Right Triangles - Section 2.3 Finding Trigonometric Function Values Using a Calculator - 2.3 Exercises: 29


$\theta$ $\approx$ 68.67432914$^{\circ}$

Work Step by Step

$\sec$ $\theta$ = 2.7496222 Therefore: $\cos$ $\theta$ = $\frac{1}{\sec\theta}$ $\cos$ $\theta$ = $\frac{1}{2.7496222}$ $\cos$ $\theta$ = 0.36366863 $\theta$ = $\cos$$^{-1}$ 0.36366863 Utilizing the calculator: $\theta$ $\approx$ 68.67432914$^{\circ}$
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