#### Answer

$w = 18.5$ units

#### Work Step by Step

$w^{2} = (14)^{2} + (21)^{2} - 2(14)(21)cos(60)$
$w^{2} = 196 + 441 - 588cos(60)$
by GDC / calculator
$w^{2} = 637 - 294$
$w^{2} = 343$
$w = \sqrt {343}$
$w = 18.5202...$ units
$w = 18.5$ units

Published by
Brooks Cole

ISBN 10:
9781285195698

ISBN 13:
978-1-28519-569-8

$w = 18.5$ units

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.