Answer
$30^{o}.$
Work Step by Step
We know that if $\cos{x}=y$, then $\cos^{-1}{y}=x.$
Thus, if $\cos{(\theta)}=\frac{\sqrt3}{2}$, then $\theta=\cos^{-1}{(\frac{\sqrt3}{2})}=30^{o}$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 8 - Applications of Trigonometric Functions - 8.2 The Law of Sines - 8.2 Assess Your Understanding - Page 530: 2
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