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: 12

Answer

$\sin\theta=\frac{y}{r}=\frac{0}{5}=0$ $\cos\theta=\frac{x}{r}=\frac{-5}{5}=-1$ $\tan\theta=\frac{y}{x}=\frac{0}{-5}=0$ $\csc\theta=\frac{r}{y}=\frac{5}{0}=undefined$ $\sec\theta=\frac{r}{x}=\frac{5}{-5}=-1$ $\cot\theta=\frac{x}{y}=\frac{-5}{0}=undefined$

Work Step by Step

$x=-5$ $y=0$ $r=\sqrt{(-5)^{2}+(0)^{2}}=\sqrt {25+0}= 5$
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