Jee Advanced
Properties Of Triangle
IIT-JEE 2006
MCQM+3 / -12006
Internal bisector of $\angle A$ of triangle $A B C$ meets side BC at D . A line drawn through D perpendicular to AD intersects the side AC at E and the side AB at F . If $a, b, c$ represent sides of $\triangle \mathrm{ABC}$ then