In the triangle ABC, the bisectors of the exterior angles B and C meet at O. Given angle BAC=60∘ and angle ABC=70∘. Find angle BOC.

In the triangle ABC, the bisectors of the exterior angles B and C meet

1.	In the triangle ABC, the bisectors of the exterior angles B and C meet at O. Given angle BAC=60∘ and angle ABC=70∘. Find angle BOC.
Answer» In the triangle ABC, the bisectors of the exterior angles B and C meet at O. Given angle $B A C = 60^{\circ}$ and angle $A B C = 70^{\circ}$ . Find angle BOC.