Question taken from RD sharma
Class 10th
Chapter no. 4
Chapter name:- Triangles
Exercise :- 4.3
This is very basic and important questions.
In this question ques we have been given the measure of sides of triangle ABzC and we have to to find out if AD is Angle bisector of A or not.
Understanding and learning CBSE maths
RD sharma, DHANPAT RAI publication
AB=5cm
AC=10cm
BD=1.5cm
CD=3.5cm
ACAB=105=0.5 (1)
CDBD=3.51.5≈0.43 (2)
(1)=(2)
Hence AD is not the bisector of ∠A of △ ABC