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

In this question we have been given a triangle ΔABC,

if ∠1 = ∠2,

Now we have to Prove that, AB/AC = BD/CD

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RD sharma, DHANPAT RAI publication