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vec(a)=3hati+2hatj+9hatk and vec(b)=hati...

`vec(a)=3hati+2hatj+9hatk` and `vec(b)=hati+p hatj+3hatk`. If the vector `vec(a)` and `vec(b)` are parallel then find the value of P.

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The correct Answer is:
`(2)/(3)`
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