Introduction to 3DHard
Question
The length of line segment AB is 14 if its direction ratio are 2, 3, 6 then its direction cosines will be -
Options
A.± 2/7 ± 3/7 ± 6/7
B.± 2/14, ± 3/14, ± 6/14
C.± 2/7 
3/7, ± 6/7
3/7, ± 6/7D.None of these
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