If , and are the position vectors of the vertices of . The length of the bisector of…

MATHEMATICS · Subjective · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

A(1, -1, -3)

B(2, 1, -2)

and

C(-5, 2, -6)

are the position vectors of the vertices of

\triangle ABC

. The length of the bisector of its internal angle at A is

\frac{\lambda\sqrt{10}}{4}

, then value of

\lambda