Question

If AB-13.6 , AC=11.9cm
and E=5.1cm findAD.
DE IBC​

Answer 1

Answer:

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Answer 2

Explanation:

In ∆ ABC, it is given that DE || BC.

Applying Thales’ Theorem, we get :

AD/DB + 1 = AE/EC + 1

» AB/DB = AC/EC

» 13.3/DB = 11.9/5.1

» DB = 13.3 × 5.1 / 11.9 = 5.7 cm

Therefore, AD = AB - DB = 13.5 - 5.7 = 7.6 cm