In ΔABC, if bisectors of ∠ABC and ∠ACB intersect at O at angle of 120∘ , then find the measure of ∠A.

In ΔABC, if bisectors of ∠ABC and ∠ACB intersect at O at angle o

1.	In ΔABC, if bisectors of ∠ABC and ∠ACB intersect at O at angle of 120∘ , then find the measure of ∠A.
Answer» In $Δ A B C,$ if bisectors of $∠ A B C$ and $∠ A C B$ intersect at O at angle of $120^{\circ}$ , then find the measure of $∠ A .$