What is the value of linear velocity, if...

What is the value of linear velocity, if `vecomega=3hati-4hatj+hatk` and `vecr=5hati-6hatj+6hatk`?

`6hati+2hatj-3hatk`

`-18hati-13hatj+2hatk`

`4hati-13hatj+6hatk`

`6hati-2hatj+8hatk`

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The correct Answer is:

`vecv=vecomegaxxvecr=|(hati , hatj ,hatk), (3 ,-4,1), (5,-6,6)|=-18hati-13hatj+2hatk`

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