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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
Angle between `vecB xx vecA and vecA ` is `90^(@)`
`(vecB xx vecA). vecA=|vecB xx vecA||vecA| cos 90^(@)`
`=0`
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