Write the trigonometric expression in terms of a single trigonometric function. cos2 7a -sin2 7x

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter1: Trigonometry
Section1.3: Right Triangle Trigonometry
Problem 1ECP: Use the triangle below to find the values of the six trigonometric functions of .
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Write the trigonometric expression in terms of a single trigonometric function.
cos² 7a - sin2 7x
Transcribed Image Text:Write the trigonometric expression in terms of a single trigonometric function. cos² 7a - sin2 7x
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