Answer
$\theta$ $\approx$ 31.19999781$^{\circ}$
Work Step by Step
$\cos$ $\theta$ = 0.85536428
Therefore:
$\theta$ = $\cos$$^{-1}$ 0.85536428
Utilizing the calculator:
$\theta$ $\approx$ 31.19999781$^{\circ}$
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
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 - Page 63: 32
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