Question extracted from RD sharma of class 10th, Chapter no. 4
Chapter name:- Triangles
Exercise :- 4.3
This is very basic and important questions. And has been asked in several times in exams.

We have that In a ∆ABC, AD is the bisector of ∠A, meeting side BC at D.

Also we have been given some measurements of sides of triangle

Now we have to find AC

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RD sharma, DHANPAT RAI publication