Elementary Geometry for College Students (5th Edition)

Published by Brooks Cole
ISBN 10: 1439047901
ISBN 13: 978-1-43904-790-3

Chapter 5 - Section 5.1 - Ratios, Rates, and Proportions - Exercises: 25

Answer

Angle 1: 40 Degrees Angle 2: 50 Degrees

Work Step by Step

Complimentary Angle = 90 Degrees Divide total angle by the total number of parts in ratio (4 + 5 = 9) 90/9 = 10 Multiply that by number of parts in each part of the ratio. 10 x 4 = 40 10 x 5 = 50 Add the parts of the ratio to check to make sure it equals the total amount of the angle. 40 + 50 = 90
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