1.

Two vertices of a triangle have position vectors 3hati+4hatj-4hatk and 2hati+3hatj+4hatk. If the position vector of the centroid is hati+2hatj+3hatk, then the position vector of the third vertex is

Answer»

`- 2hati - hatj + 9 HATK `
`- 2 HATI - hatj - 6 hatk `
`-2 hati - hatj + 6 hatk `
`2hati - hatj + 6hatk `

Answer :` - 2hati - hatj + 9 hatk `


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