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: 13

Answer

See sketch, $sin\theta= \frac{4}{5}$, $cos\theta= \frac{3}{5}$, $tan\theta=\frac{4}{3}$, $cot\theta=\frac{3}{4}$, $sec\theta= \frac{5}{3}$, $csc\theta= \frac{5}{4}$

Work Step by Step

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