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Let ABC be a triangle with /A=45^0dot Le...

Let ABC be a triangle with `/_A=45^0dot` Let P be a point on side BC with PB=3 and PC=5. If O is circumcenter of triangle ABC, then length OP is `sqrt(18)` (b) `sqrt(17)` (c) `sqrt(19)` (d) `sqrt(15)`

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