Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Appendix F - Exercise Set - Page 1012: 5



Work Step by Step

Two angles are complementary if the sum of their measures is 90°. The complement of a $11\frac{1}{4}°$ angle is an angle whose measure is $90°-11\frac{1}{4}° = 78\frac{3}{4}° $ To check, notice that $11\frac{1}{4}° + 78\frac{3}{4}°= 90°$.
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