Answer
$a: 71^{\circ}; b= 161^{\circ}$
Work Step by Step
1. Complementary angles have a sum of 90 degrees
$a: 90^{\circ} - 19^{\circ}=71^{\circ}$
2. Supplementary angles have a sum of 180 degrees
$b: 180^{\circ}- 19^{\circ} =161^{\circ}$
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 1 - Quiz (Sections 1.1-1.2) - Page 21: 1
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