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If the angle between the vectors vecA an...

If the angle between the vectors `vecA and vecB` is `theta,` the value of the product `(vecB xx vecA) * vecA` is equal to

A

`BA^(2) cos theta`

B

`BA^(2) sin theta`

C

`BA^(2) sin theta cos theta`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
D
We know that scalar triple product is cyclic,
`(vec(B)xxvec(A)).vec(A)=(vec(A)xxvec(B)).vec(A)=(vec(A)xxvec(A)).vec(B)=vec(0).vec(B)=0`
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