Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 7 - 7.2 - Verifying Trigonometric Identities - 7.2 Exercises - Page 521: 65


False. It is a conditional equation. In an identity the equation is true for any $θ$ in the domain of the equation.

Work Step by Step

Test another value of $θ$ $sin^2θ+cos^2θ=1+tan^2θ$ $sin^2(60°)+cos^2(60°)=1+tan^2(60°)$ $\frac{3}{4}+\frac{1}{4}=1+3$ $1=4$ False.
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