Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The direction cosines of a line equally inclined to three mutually perpendicular lines having direction cosines as 
and 
are
A
B
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
B
Since the three lines are mutually perpendicular,
Also, 
Now, 
= 
+ 
= 3
⇒ ⇒ 
Hence, direction cosines of required line are :
Note: Students should remember it as a fact.
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