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Let A and B be two distinct points on the line L:\ \dfracx-63=\dfracy-72=\dfracz-7-2. Both A and B are at a distance 2√17 from the foot of perpendicular drawn from the point (1,2,3) on the line L. If O is the origin, then \overrightarrowOA*\overrightarrowOB is equal to | Watch the step-by-step video solution for this NIMCET PYQ.