Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 14 Trigonometric Graphs, Identities, and Equations - Investigating Algebra Activity - 14.3 Investigating Trigonometric Identities - Draw Conclusions - Page 923: 4

Answer

all x-values

Work Step by Step

Using a graphing calculator (see attached image), this is true for all x-values. (The two graphs cover each other.)
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