Answer
Option (d). 1.1753
Work Step by Step
Steps to approximate sec 31.7°, using a calculator-
31.7° → cos →$\frac{1}{x}$
which gives us-
$\sec 31.7^{\circ}$ = 1.1753490157
Trigonometry 7th Edition
by McKeague, Charles P.; Turner, Mark D.
Published by
Cengage Learning
ISBN 10:
1111826854
ISBN 13:
978-1-11182-685-7
Chapter 2 - Section 2.2 - Calculators and Trigonometric Functions of an Acute Angle - 2.2 Problem Set - Page 73: 99
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