Question

bisector of angle BAC intersects side BC at D .prove that AB is greater than BD.
plz give me ans. tomorrow is my paper

Answer 1

BAD=Dac

BD=DC ,[isosceles triangles]

AD≤ AB +BD[inequalities of triangles] -1 EQ

AD≤AC+DC[inequalities of triangles] -2 EQ

Subtracting EQ 2 from 1 ,

AB ≥ BD

Hence proved