In the given figure BO'and CO' are the bisector ofthe exterior angles CBP and BCQ respectively and BO and CO are the bisector of angle PCO' and QCO' respectively. If angle BOC =30°, then difference between angle BO'C and angle BAC is Equal to (A)20° (B)60° (C)80° (D)100°
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A)-20°........
hope it is correct.......
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