Answer:
y ≈ 46.2
Step-by-step explanation:
using the law of sines , then
[tex]\frac{y}{sin85}[/tex] = [tex]\frac{31}{sin42}[/tex] ( cross- multiply )
y × sin42° = 31 × sin85° ( divide both sides by sin42° )
y = [tex]\frac{31sin85}{sin42}[/tex] ≈ 46.2 ( to the nearest tenth )
