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A(1,-1,-3), B(2, 1,-2) & C(-5, 2,-6) are...

`A(1,-1,-3), B(2, 1,-2) & C(-5, 2,-6)` are the position vectors of the vertices of a triangle ABC. The length of the bisector of its internal angle at A is :

A

`2/3sqrt(10)`

B

`3/4sqrt(10)`

C

`4/3sqrt(10)`

D

`3/2sqrt(10)`

Text Solution

Verified by Experts

The correct Answer is:
B
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