#### Answer

$V = 163~cos(\omega~t-\frac{\pi}{2})$

#### Work Step by Step

$sin(\theta) = cos(\theta-\frac{\pi}{2})$
We can express $V$ in terms of cosine:
$V = 163~sin(\omega~t)$
$V = 163~cos(\omega~t-\frac{\pi}{2})$

Published by
Pearson

ISBN 10:
978-0-13-421743-7

ISBN 13:
978-0-13421-743-7

$V = 163~cos(\omega~t-\frac{\pi}{2})$

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