Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Let 
and 
. Let 
be a vector such that 
= 3, 
= 3 and the angle between 
and 
be 30º. Then 
is equal to
A
B
2
C
5
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Sol. 
, 
^ 
= 
Now vc | 
| | 
| sin30 0 = 3, | 
| | 
| = 6
⇒ 
sin θ = 6, θ = 
= 3, 
= 
θ = cos –1 
= 
= 2
| 
| = 3
Squaring, we get 
⇒ 
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