Introduction to 3DEasy
Question
The co-ordinates of points A, B, C, D are respectively (4, 1, 2); (5, a, 0) ;(2,1, 1) and (3, 3, −1), if AB is perpendicular to CD then ′a′ equal to -
Options
A.1/2
B.−1/2
C.3/2
D.− 3/2
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