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The unit vector along vec(A)= 2 hat i + ...

The unit vector along `vec(A)= 2 hat i + 3 hat j` is :

A

`2 hat i+ 3 hat j`

B

`(2 hati +3 hatj)/(2)`

C

`(2 hati +3 hatj)/(3)`

D

`(2 hati+3hatj)/(sqrt(13))`

Text Solution

Verified by Experts

The correct Answer is:
D
`vec(A)=2 hati+3 hatj rArr vec(A)-A hat(A)`
`hat(A) =(2hat i+3hatj)/(sqrt(4+9))=(2 hati+3 hat j)/(sqrt(13))`.
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