Answer
$ \frac{1}{8}$
Work Step by Step
Given expression
= $ ( \sin 30^{\circ})^{3}$
= $ (\frac{1}{2})^{3}$
( substituting exact value of $ \sin 30^{\circ}$)
= $ \frac{1}{8}$
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 2 - Section 2.1 - Definition II: Right Triangle Trigonometry - 2.1 Problem Set - Page 62: 38
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