Answer
Part A:
sec($\frac{\pi}{9}$) = 1.0642
Part B:
cos($\frac{\pi}{9}$) = 0.9397
Work Step by Step
Using a calculator:
Part A:
sec($\frac{\pi}{9}$) = 1.0642
Part B:
cos($\frac{\pi}{9}$) = 0.9397
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 6 - 6.2 - Right Triangle Trigonometry - 6.2 Exercises - Page 442: 32
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