In a ABC?, the sides AB and AC are produced to P and Q respectively. The bisectors of ? PBC and ? QCB intersect at a point O. Prove that ? BOC =90 ° ? 1/2 ?A
In a ABC?, the sides AB and AC are produced to P and Q respectively. The bisectors of ? PBC and ? QCB intersect at a point O. Prove that ? BOC =90 ° ? 1/2 ?A