Answer :
a) sin 30 = x/24
x = 24 sin 30
x = 24(0.5)
x = 12
b) B = 90°
A = 45°
C = 45°
[tex]\begin{gathered} \text{ sin 45 = }\frac{x}{18\sqrt[]{2}} \\ \text{ x = 18}\sqrt[]{2}\text{ }\frac{\sqrt[]{2}}{2} \\ \text{ x = 18}\frac{2}{2} \\ \text{ x = 18} \end{gathered}[/tex]the length = 18 units