Find AB if BC is 20 and AD is 24

Tobey Blaber asked Jun 20, 2023

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Tobey Blaber asked Jun 20, 2023

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13 votes

BC = 20

If < B = 67

Then

Th using the sine rule

$\frac{\sin\text{ 67}}{AB}=(\sin 46)/(20)$

cross -multiply

$AB\text{ sin 46=20sin67}$

Divide both-side of the equation by sin46

$AB\text{ =}(20\sin 67)/(\sin 46)$
$AB\approx25.59$

Goralph answered Jun 24, 2023

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