13. In the given figure, the angle bisectors of Band 4C meet at OFind – InterviewSolution

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13. In the given figure, the angle bisectors of Band 4C meet at OFind Z BOC0(a) 90+A/2(c) 90+ C/2(b) 90+B/2(d) 90-A/2

Answer»

angle B+C = 180-A=> (B+C)/2 = 90-A/2

so, (B+C)/2 + BOC = 180=> BOC = 180-(B+C)/2 = 180-90+A/2 = 90+A/2 option A

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