C-08-Q224mediumsingle_mcqWith ∠BAC=60∘\angle BAC = 60^{\circ}∠BAC=60∘ for tangents AB,ACAB,ACAB,AC and centre OOO, ∠BOC\angle BOC∠BOC equals—a300∘300^{\circ}300∘b270∘270^{\circ}270∘c