Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 8 - Geometry - 8.2 Angles and Their Relationships - 8.2 Exercises: 16



Work Step by Step

To be complementary the sum of the two angles must be equal to 90$^{\circ}$. Since acute angles are less than 90$^{\circ}$ it is possible for them to be complementary. For example 20$^{\circ}$ and 70$^{\circ}$ are both acute and complements of each other since their sum is 90$^{\circ}$.
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