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}=(\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`