nally externally in the ratio of the
27. In the figure, AD is the bisector of ZA. If BD = 4 cm, DC = 3 cm and AB = 6 cm, then AC :1.
A
6cm
2
.
C С
B
4cm D 3cm
L
A) 4.5 cm
B) 3.5 cm
C) 4.8 cm
D) 3.2 cm
60
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Answer:
In △ABC, AD is the bisector of ∠A.
∴
DC
BD
=
AC
AB
⇒
3
4
=
AC
6
⇒ 4AC=18
⇒ AC=
2
9
cm=4.5cm
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