Answer
$-22.5^\circ.$
Work Step by Step
To convert from radians to degrees, the answer in degrees must be multiplied by $\frac{180^\circ}{\pi}$.
Therefore:
$\frac{-\pi}{8}\text{radians}=\frac{-\pi}{8}\cdot\frac{180^\circ}{\pi}=-22.5^\circ.$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 6 - Trigonometric Functions - Chapter Review - Chapter Test - Page 436: 4
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