0A, B, C, D are concyclic points. Find BAC and DCB – InterviewSolution

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0A, B, C, D are concyclic points. Find BAC and DCB

Answer»

In ∆BDC,∠DBC + ∠BCD + ∠BDC = 180°∠BDC = 180° - 100 = 80°

As ∆ BDC and ∆ ABC are in same segment therefore.∠BDC = ∠BAC∠BAC = 80°

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