Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

Published by Pearson
ISBN 10: 0-32193-104-1
ISBN 13: 978-0-32193-104-7

Chapter 5 - Trigonometric Functions - Cumulative Review - Page 460: 9



Work Step by Step

We will use the Trigonometric Identity $\sin^2 \theta+\cos^2 \theta =1$ We evaluate the given expression to obtain: $\sin (14^{\circ})^2+\cos (14^{\circ})^2 -3$ or, $=1-3$ or, $=-2$
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