1.

If the vector 19hati+22hatj+5hatk bisects an angle between the vectors a and 6hati+8hatj, then the unit vector in the direction of a is

Answer»

`(1)/(5)(4hati+3hatj)`
`(1)/(3)(2hati+2hatj+hatk)`
`(1)/(3)(hati+2hatj+2hatk)`
`(1)/(3)(2hati+2hatj-hatk)`

ANSWER :B


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