Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 1 - Trigonometric Functions - Section 1.3 Trigonometric Functions - 1.3 Exercises - Page 27: 59

Answer

$\tan180^{\circ}=0$

Work Step by Step

1. What we know about 180 degree angle $\theta=180^{\circ}$ $x=-1$ $y=0$ $r=1$ 2. Substitute in: $\tan\theta=\frac{y}{x}=\frac{0}{-1}=0$
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