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A unit vector in xy plane makes an an...

A unit vector in xy plane makes an angle of `45^(@)` with the vector `hati+hatj` and an angle of `60^(@)` with the vector `3hati-4hatj` is a)`hati` b)`(hati+hatj)/(sqrt(2))` c)`(2hati+hatj)/(sqrt(2))` d)None of these

A

`hati`

B

`(hati+hatj)/(sqrt(2))`

C

`(2hati+hatj)/(sqrt(2))`

D

None of these

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