Answer
$t = 0.2015~s$
Work Step by Step
We can find the least value of $t$ such that $V = 0.30$:
$V = cos~2\pi~t$
$cos~2\pi~t = 0.30$
$2\pi~t = arccos(0.30)$
$2\pi~t = 1.266$
$t = \frac{1.266}{2\pi}$
$t = 0.2015~s$
Trigonometry (11th Edition) Clone
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
978-0-13-421743-7
ISBN 13:
978-0-13421-743-7
Chapter 6 - Quiz (Sections 6.1-6.3) - Page 282: 7b
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
