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If A.B=AxxB, then angle between A and B ...

If `A.B=AxxB`, then angle between `A` and `B` is

A

`45^(@)`

B

`30^(@)`

C

`60^(@)`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Given ,`A.B=AxxA`
`AB cos theta=ABsin theta`
`tantheta=1`
`tantheta=tan45^(@)`
`theta=45^(@)`
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