Algebra and Trigonometry 10th Edition

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

Chapter 6 - 6.3 - Trigonometric Functions of Any Angle - 6.3 Exercises - Page 454: 35


sec($\frac{3\pi}{2}$) = undefined

Work Step by Step

Using the unit circle, sec($\frac{3\pi}{2}$) = undefined This is because cosine is 0 at $3 \pi /2 $.
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