Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 1 - Trigonometric Functions - Section 1.4 Using the Definitions of the Trigonometric Functions - 1.4 Exercises - Page 37: 60

Answer

Impossible. They both should have the same sign.

Work Step by Step

Because cosine and secant are reciprocal functions $\cos\theta=\frac{1}{\sec\theta}$
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