Published by:
CGP EDU Academic Team
Published on: August 14, 2026
If co-ordinates of points A, B, C and D are
(1, 2, 3) ; (4, 5, 7) ; (–4, 3, –6) and (2, 9, 2) respectively ; then the angle between AB and CD is
Text Solution
Verified by ExpertsThe correct answer is:
D
D.R's of AB = 3, 3, 4
D.R's of CD = 6, 6, 8
as 
∴ AB || CD
∴ required angle is zero.
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