Answer
$229^\circ11'$
Work Step by Step
Use the conversion $1\ rad = \frac{180}{\pi}^\circ$, we have $4\ rad =4 \times \frac{180}{\pi}\approx229.18^\circ\approx229^\circ11'$
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 - Test - Page 650: 6
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