Answer
1. angle
Work Step by Step
using a variable to represent an angle in a triangle will allow you to use triangle rules and a visual representation of the problem which can prove or simplify the process of answering difficult questions
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 5 - Section 5.5 - Additional Identities - 5.5 Problem Set - Page 311: 1
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