Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 7 - Trigonometry and Periodic Functions - Strengthen Your Understanding - Page 321: 69



Work Step by Step

The curves of a tangent function differ by pi. Thus, it follows that if the two tangent values are equal, the difference in the angles will be an integer factor of pi. Thus, when this value is divided by pi, it will yield an integer.
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