Prove by using distance formula that the points

MATHEMATICS · Subjective · CBSE · Mathematics · Introduction to Three-Dimensional Geometry · Introduction to Three-Dimensional Geometry

Problem

Prove by using distance formula that the points P(1,2,3)P(1, 2, 3) , Q(−1,−1,−1)Q(-1, -1, -1) and R(3,5,7)R(3, 5, 7) are collinear.

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