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The unit vactor parallel to the resultan...

The unit vactor parallel to the resultant of the vectors `vec(A)=4hat(i)+3hat(j)+6hat(k)` and `vec(B)=-hat(i)+3hat(j)-8hat(k)` is :-

A

`(1)/(7)(3hat(i) + hat(j) - 2hat(k))`

B

`(1)/(7)(3hat(i) + 6hat(j) + 2hat(k))`

C

`(1)/(49)(3hat(i) + 6hat(j) - 2hat(k))`

D

`(1)/(49)(3hat(i) - 6hat(j) + 2hat(k))`

Text Solution

Verified by Experts

The correct Answer is:
A
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