1.

A(1, 1, 2), B(4, 3, 1) and C(2, 3, 5) are vertices of a triangle ABC. The vector along the bisector angleA is …………..

Answer»

`hati+hatj+hatk`
`2hati-2hatj+hatk`
`2hati+2hatj+hatk`
NONE of these

ANSWER :C


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