1.

If the vector veca=2hati+3hatj+6hatk and vecb are collinear and |vecb|=21," then "vecb is equal to

Answer»

`PM (2hati+3hatj+6hatk)`
`pm 3(2hati+3hatj+6hatk)`
`(hati+hatj+hatk)`
`pm 21 (2hati+3hatj+6hatk)`

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