Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter 13 - The Trigonometric Functions - Chapter Review - Review Exercises - Page 701: 28

Answer

$tan120^\circ=-1$

Work Step by Step

We are given $\tan120^\circ$ We can find the value by using right-angled triangle create by x, y, r and $\theta=60^\circ$ From the $30^\circ-60^\circ-90^\circ$ we will have $x=-1, y=1, r=1$ Using the definitions of the trigonometric functions give the following result $tan120^\circ=-1$
Small 1568464270
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.