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In a triangle ABC, right angled at the vertex A, if the position vectors of A,B and C are respectively 3\hati + \hatj - \hatk, -\hati + 3\hatj + p\hatk and 5\hati + q\hatj - 4\hatk, then the point (p,q) lies on a line: | Watch the step-by-step video solution for this NIMCET PYQ.