А 43. BO and CO, the bisectors of ZB and ZC respectively, of AABC, meet at O. If ZA = 60°, then the measure of ZBOC is (a) 100° (b) 90° (C) 120° (d) 150°
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Answer:
(C) 120°
Step-by-step explanation:
because angle OBC and angle OCB are 60°
so According to the angle sum property angle BOC = 120°
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