Question drawn from very renowned book RD sharma of class 10th, Chapter no. 4
Chapter name:- Triangles
Exercise :- 4.3
This is very important question of triangle.
In this question ques we have been given the measure of sides of triangle ABC and we have to to find out if AD is Angle bisector of A or not. By using triangles properties
learning CBSE maths in efficient way
RD sharma, DHANPAT RAI publication
Class 10th, triangle
AB=5cm
AC=12cm
BD=2.5cm
BC=9=BD+DC=2.5+DC
CD=6.5cm
ACAB=125≈0.42 (1)
CDBD=6.52.5≈0.38 (2)
(1)=(2)
Hence AD is not the bisector of ∠A of △ ABC