Answer
True
Work Step by Step
The identity that sine squared plus cosine squared is equal to one is likely the most important trigonometric identity to know for higher Math classes.
Functions Modeling Change: A Preparation for Calculus, 5th Edition
by Connally, Eric; Hughes-Hallett, Deborah; Gleason, Andrew M.; Cheifetz, Phil C.
Published by
Wiley
ISBN 10:
1118583191
ISBN 13:
978-1-11858-319-7
Chapter 9 - Trigonometric Identities, Models, and Complex Numbers - Strengthen Your Understanding - Page 396: 6
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