Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter 4 - Section 4.4 - Trigonometric Functions of Any Angle - Exercise Set - Page 576: 105


See explanations.

Work Step by Step

Given a point $(x,y)$ on the terminal side of angle $\theta$, we have $r=\sqrt {x^2+y^2}$ and by definition, we can find $sin\theta=\frac{y}{r}$.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.