let A(4,7,8) , B(2,3,4) C(2,5,7) be the position vectors of the vertices of a triangle ABC then length of internal - Maths - Matrices

Question

let A(4,7,8) , B(2,3,4) C(2,5,7) be the position vectors of the
vertices of a triangle ABC then length of internal angular bisector
of angle A is ?

Pankaj Kumar · Accepted Answer

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let A(4,7,8) , B(2,3,4) C(2,5,7) be the position vectors of the vertices of a triangle ABC.then length of internal angular bisector of angle A is ?