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The value of n so that vectors 2hati+3ha...

The value of n so that vectors `2hati+3hatj-2hatk, 5hati+nhatj+hatk and -hati+2hatj+3hatk` may be complanar.will be

A

18

B

28

C

9

D

36

Text Solution

Verified by Experts

The correct Answer is:
A
Scalar triple product of three vectors
= volume of parallel applied =0
`=|(2, 3,-2),(5,n,1),(1,2,3)|=0`
Solving this equation, we get
n =18.
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DC PANDEY ENGLISH-VECTORS-Single Correct
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