A) \[{{65}^{o}}\]
B) \[{{105}^{o}}\]
C) \[{{95}^{o}}\]
D) \[{{85}^{o}}\]
Correct Answer: B
Solution :
Clearly, triangle OBC is an isosceles triangle. \[(\because \,\,OB=OC)\] \[\therefore \]\[\angle OBC=\angle OCB=30{}^\circ \] \[\therefore \]\[\angle BOC=120{}^\circ \] \[\therefore \angle A=60{}^\circ \]You need to login to perform this action.
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