Answer
$-210^\circ$
Work Step by Step
Use the conversion factor $1\ rad=\frac{180^\circ}{\pi}$, we have $-\frac{7\pi}{6}=-\frac{7\pi}{6}\times\frac{180^\circ}{\pi}=-210^\circ$
Precalculus (6th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
013421742X
ISBN 13:
978-0-13421-742-0
Chapter 6 - The Circular Functions and Their Graphs - Quiz - Page 616: 2
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