Precalculus (6th Edition) Blitzer

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 534: 120

Answer

The statement does not make sense.

Work Step by Step

We know that for an angle less than $4\pi $ , we can find the terminal angle less than $2\pi $ because when an angle exceeds $4\pi $, adding it with $2\pi $ will make it greater than $4\pi $ and subtracting it with $2\pi $ will make it greater than $2\pi $. Hence, it is not always true that adding or subtracting $2\pi $ to an angle gives a coterminal angle less than $2\pi $.
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