The vertices of triangle are

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

A(1, 1, 2)

B(4, 3, 1)

and

C(2, 3, 5)

. A vector representing the internal bisector of the triangle A is (1)

i + j + 2 k

(2)

2 i - 2 j + k

(3)

2 i + 2 j + k

(4) None of these