#### Answer

$a^{2}$=$b^{2}$+$c^{2}$-2bc cos a

#### Work Step by Step

We have to consider the other two sides (b and c) and the opposite angle (a).

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Published by
Brooks Cole

ISBN 10:
9781285195698

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

$a^{2}$=$b^{2}$+$c^{2}$-2bc cos a

We have to consider the other two sides (b and c) and the opposite angle (a).

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