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In the above figure (not to scale), O is...


In the above figure (not to scale), O is the centre of the circle. `bar(AP)` and `bar(BP)` are two chords. C is the point of intersection of `bar(AP)` and `bar(OB)`. If `/_ OAC= 30^(@)` and `/_ PBC =80^(@)`, then `/_ AOB=`

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