Answer
$90°$
Work Step by Step
To convert from radians to degrees, the measurement in radians must be multiplied by $\frac{180°}{\pi}$.
Therefore
$\frac{\pi}{2} \text{ radians}= \frac{\pi}{2} \times \frac{180°}{\pi}$
$=\frac{180°}{2}$
$=90°$
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 - 6.1 Angles and Their Measure - 6.1 Assess Your Understanding - Page 362: 51
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