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: 62

Answer

$\csc270^{\circ}=-1$

Work Step by Step

1. What we know about 270 degree angle $\theta=270^{\circ}$ $x=0$ $y=-1$ $r=1$ 2. Substitute in: $\csc\theta=\frac{r}{y}=\frac{1}{-1}=0$
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