Algebra and Trigonometry 10th Edition

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

Chapter 6 - 6.1 - Angles and Their Measure - 6.1 Exercises - Page 430: 27


(a) $85.3833$ (b) $-330.00694$

Work Step by Step

$1'=60''$ $1°=60'$ $1°=60'\times\frac{60''}{1'}=3600''$ (a) $85°~18'~30''=85°+18'·\frac{1°}{60'}+30''·\frac{1°}{3600''}=85°+0.3°+0.00833=85.3833$ (b) $-330°~25''=-(330°+25''·\frac{1°}{3600''})=-(330°+0.00694)=-330.00694$
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