1.

If A(1, -1, -3), B(2, 1, -2), C(-5, 2, -6) are the vertices of a DeltaABC, then the length of internal bisector of angle A is

Answer»

`3/4sqrt(10)`
`1/2sqrt(10)`
`1/4sqrt(10)`
`SQRT(10)`

ANSWER :A


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