Answer
-$\frac{5\pi}{4}$ radians
Work Step by Step
To convert degrees to radians, multiply degrees by $\frac{\pi}{180 °}.$
So -225° = -225 ° x $\frac{\pi}{180 °}$
= -$\frac{5\pi}{4}$ radians.
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 - Section 4.1 - Angles and Radian Measure - Exercise Set - Page 532: 19
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