Answer
$-117^o$
Work Step by Step
Multiply $\dfrac{180^o}{\pi}$ to the given angle measure to obtain:
$=-\dfrac{13\pi}{20} \cdot \dfrac{180^o}{\pi}
\\=-\dfrac{2340^o(\pi)}{20\pi}
\\=-117^o$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 4 - Mid-Chapter Check Point - Page 577: 4
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