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If hati and hatj are unit vectors along ...

If `hati` and `hatj` are unit vectors along X-and Y-axis respective, then what is the magnitude and direction of `hati +hatj` and `hati - hatj` ?

A

2

B

0

C

`sqrt(2)`

D

4

Text Solution

Verified by Experts

The correct Answer is:
C
(C ) Let the given be A where
`A=hati+hatj`
`|A|=sqrt((1)^(2)+(1)^(2))=sqrt(2)`
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