Trigonometry (11th Edition) Clone

Published by Pearson
ISBN 10: 978-0-13-421743-7
ISBN 13: 978-0-13421-743-7

Chapter 3 - Radian Measure and the Unit Circle - Section 3.2 Applications of Radian Measure - 3.2 Exercises - Page 115: 74



Work Step by Step

In a right angled triangle, $\cos\theta=\frac{base}{hypotenuse}$ Since $r=hypotenuse$ and $h=base$, the formula becomes: $\cos\theta=\frac{base}{hypotenuse}=\frac{h}{r}$ Solving for $h$: $h=r\cos\theta$
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.