Referring to the Fig
find m∠2

Answer:
m ∠ 2 = 150°
Step-by-step explanation:
30°+ m ∠ 1 = 180°
m ∠ 1 = 180 – 30 = 150°
m ∠ 1 and m ∠ 2 = 150° —> Opposite angles
I hope I helped you^_^