Answer:
Option A, 70°
Explanation:
If seen closely, ∠2 and ∠3 fall on the same segment, and that segment is a straight angle, this means ∠2 and ∠3 are supplementary angles (both add up to 180° or a straight angle). So we can say:
∠2 + ∠3 = 180
Then replace m∠3 with 110, as given:
∠2 + 110 = 180
Subtract 110 from both sides of "="
⇒ ∠2 = 70°
Hope this helps!