A) \[95{}^\circ \]
B) \[90{}^\circ \]
C) \[98{}^\circ \]
D) \[92{}^\circ \]
E) None of these
Correct Answer: B
Solution :
Explanation AOB is a straight line \[\therefore \,\,\,\angle AOC + \angle BOC = 180{}^\circ \] \[\Rightarrow \,\,\,\,\frac{1}{2}\angle AOC+\frac{1}{2}\angle BOC=\frac{1}{2}\times 180{}^\circ \] \[\Rightarrow \,\,\,\,\,\,\,\angle \,XOC\,\,+\,\,\angle \,YOC=90{}^\circ \] \[\Rightarrow \,\,\,\,\,\,\angle \,XOY\,\,=\,\,90{}^\circ \]
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