Precalculus (6th Edition)

by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie

Published by Pearson

ISBN 10: 013421742X

ISBN 13: 978-0-13421-742-0

Chapter 5 - Trigonometric Functions - 5.1 Angles - 5.1 Exercises - Page 504: 43

Answer

$-24^\circ 11'$

Work Step by Step

In this kind of subtraction, we subtract the degrees from the degrees and the minutes from the minutes: $47^\circ29'-71^\circ 18'=(47-71)^\circ+(29-18)'=-24^\circ 11'$

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