Question

(ii) If AB = 3.5 cm, AC = 4.2 cm and BD = 2.3 cm,
find DC​

Answer 1

Step-by-step explanation:

Given,

AB = 3.5 cm

AC = 4.2 cm

BD = 2.3 cm

In Δ ABC, AD is the bisector of ∠A, meeting side BC at D.

We need to find DC,

Since, AD is ∠A bisector

Then,

AB/AC × BD/DC

3.5/4.2 × 2.3/DC

3.5DC = 4.2×2.3

3.5DC= 9.66

DC= 9.66÷3.5

DC= 2.76 cm