Question

Find AB if BC is 20 and AD is 24

Answer 1

BC = 20

If < B = 67

Then

Th using the sine rule

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

cross -multiply

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

Divide both-side of the equation by sin46

$AB\text{ =}\frac{20\sin 67}{\sin 46}$$AB\approx25.59$