Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 13 - Section 13.1 - Trigonometric Ratios - Exercise - Page 454: 26



Work Step by Step

Using the trigonometric ratios, we have $$ \cos A=\frac{length \ of \ side\ adjacent\ angle\ A}{length\ of\ hypotenuse}\\ =\frac{54}{62}=0.8710 .$$
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