Trigonometry (10th Edition)

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

Chapter 1 - Trigonometric Functions - Section 1.1 Angles - 1.1 Exercises: 39

Answer

23$^{\circ}$49'

Work Step by Step

1. Start from the smallest part, which is the minutes part ('). See whether we need to borrow. $18' \lt 29'$ Yes, we need to borrow 2. When you borrow, you take one whole degree from 71 degrees, and add 60 minutes to the 18 you already have. 70$^{\circ}$78' - 47$^{\circ}$29' = 23$^{\circ}$49'
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