Answer
$ -\frac{7\pi}{4}$
Work Step by Step
$\frac{-315}{180} = \frac{x}{\pi}$
$x = -\frac{7\pi}{4}$
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 - 6.1 Radian Measures - 6.1 Exercises - Page 573: 18
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