In △ABC, O is the point of intersection of the bisectors of ∠B and ∠A. If ∠BOC = 108º, then ∠BAO =?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 18º
According to the angle bisector theorem,
∠BOC = 90 + 1/2 × ∠A
∠A = 18 × 2 = 36°
∠BAO = 1/2 of ∠A
∠BAO = 18°