Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 5 - Trigonometric Functions - 5.2 Trigonometric Functions - 5.2 Exercises - Page 518: 18

Answer

See sketch, $sin\theta= -\frac{7}{25}$, $cos\theta= -\frac{24}{25}$, $tan\theta= \frac{7}{24}$, $cot\theta= \frac{24}{7}$, $sec\theta= -\frac{25}{24}$, $csc\theta= -\frac{25}{7}$

Work Step by Step

1. See sketch. 2. We can find $sin\theta=\frac{-7}{\sqrt {(-7)^2+(-24)^2}}=-\frac{7}{25}$ 3. We can find $cos\theta=\frac{-24}{\sqrt {(-7)^2+(-24)^2}}=-\frac{24}{25}$ 4. We can find $tan\theta=\frac{-7}{-24}=\frac{7}{24}$ 5. We can find $cot\theta=\frac{-24}{-7}=\frac{24}{7}$ 6. We can find $sec\theta=\frac{1}{cos\theta}=-\frac{25}{24}$ 7. We can find $csc\theta=\frac{1}{sin\theta}=-\frac{25}{7}$
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