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Unit vector parallel to the resultant of...

Unit vector parallel to the resultant of vectors `A = 4hatj - 3hatj and B =8hatj+8hatj` will be

A

`(24hati+5hatj)/(13)`

B

`(12hati+5hatj)/(13)`

C

`(6hati+5hatj)/(13)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
`R = A+B = 12hati+5hatj`
`R = |R| = sqrt((12)^2 + (5)^2)
=13`
`hatR = (R )/(R )`.
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DC PANDEY-VECTORS-Single Correct
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