1.

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

Answer»

`(1)/(7)(3HAT(i) + HAT(J) - 2hat(k))`
`(1)/(7)(3hat(i) + 6hat(j) + 2hat(k))`
`(1)/(49)(3hat(i) + 6hat(j) - 2hat(k))`
`(1)/(49)(3hat(i) - 6hat(j) + 2hat(k))`

Answer :A


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