Three Dimensional Geometry Question 72
If the co-ordinates of the points $ A,B,C,D $ be (2, 3, -1), (3, 5, -3), (1, 2, 3) and (3, 5, 7) respectively, then the projection of $ AB $ on $ CD $ is
Options:
0
1
2
D) $ \sqrt{3} $
Show Answer
Answer:
Correct Answer: A
Solution:
Since AB and CD are perpendicular, the projection of AB on CD is 0.
BETA
