Using distance formula prove that the following points are collinear: (i) \( A(4,-3,-1), B(5,-7,...

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Using distance formula prove that the following points are collinear:
(i) \( A(4,-3,-1), B(5,-7,6) \) and \( C(3,1,-8) \)
(ii) \( P(0,7,-7), Q(1,4,-5) \) and \( R(-1,10,-9) \)
(iii) \( A(3,-5,1), B(-1,0,8) \) and \( C(7,-10,-6) \)
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