Answer
$6.3$ m
Work Step by Step
We need to substitute $t=0$ in the equation and solve for $a$:
$a=4|\sec 2\pi t|$
$a=4|\sec 2\pi (0.86)|$
$a=4|\sec 5.404|$
$a=4|\frac{1}{\cos 5.404}|$
$a=4|1.568|$
$a=6.272\approx6.3$ m
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 4 - Graphs of the Circular Functions - Section 4.4 Graphs of the Secant and Cosecant Functions - 4.4 Exercises - Page 175: 33b
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