## Algebra 2 (1st Edition)

Published by McDougal Littell

# Chapter 14 Trigonometric Graphs, Identities, and Equations - 14.3 Verify Trigonometric Identities - 14.3 Exercises - Problem Solving - Page 930: 45a

See below.

#### Work Step by Step

We know that $\sin^2\theta+\cos^2\theta=1$. Hence if we add the two equations we obtain the required equation.

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