Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The projections of a vector on the three coordinate axes are 6, –3, 2 respectively. The direction cosines of the vector are
A
6, –3, 2
B
, – 
, 
C
, – 
, 
D
– 
, – 
, 
, – ,
Text Solution
Verified by ExpertsThe correct answer is:
C
r = 6, mr = –3, nr = 2
∴ r 2 ( 2 + m 2 + n 2 ) = 36 + 9 + 4 = 49
⇒ r = 7
< , m, n> ≡ < 
>
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