Published by:
CGP EDU Academic Team
Published on: August 13, 2026
If 
are the direction cosines of a line, then the value of n is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
If 
are the d.c’s of line then,
⇒ ⇒ 
⇒ ⇒ 
.
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