Answer:
A
Step-by-step explanation:
Using the Sine rule in Δ ABC
[tex]\frac{sinA}{BC}[/tex] = [tex]\frac{sin38}{AB}[/tex] , substitute values
[tex]\frac{sin66}{BC}[/tex] = [tex]\frac{sin38}{3}[/tex] ( cross- multiply )
BC sin38° = 3 sin66° ( divide both sides by sin38° )
BC = [tex]\frac{3sin66}{sin38}[/tex] → A
