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Given vecA = hat i + hat j + hatk and ve...

 Given `vecA = hat i + hat j + hatk and vecB= - hati - hatj - hatk . (vecA - vecB)` will make angle with `vecA` as

A

`0^(@)`

B

`180^(@)`

C

`90^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
`vecA - vecB = 2 hati + 2hatj + 2 hatk = 2 vecA`
i.e., `vecA - vecB and vecA` are parallel.
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