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If arcs AXB and CYD of a circle are congruent ,BD is a diameter and \angle AOC=90, then find the measure of \angle AOB and \angle COD (where O is the centre of the circle |
| Answer» If arcs AXB and CYD of a circle are congruent ,BD is a diameter and \angle AOC=90, then find the measure of \angle AOB and \angle COD (where O is the centre of the circle | |