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What is the angle between hati+hatj+hatk...

What is the angle between `hati+hatj+hatk and hatj`?

A

`0^@`

B

`45^(@)`

C

`60^(@)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
D
`cos theta=((hati+hatj+hatk).hatj)/(sqrt((1)^2)+(1)^2+(1)^(2)sqrt(1)^2)=1/sqrt3`
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