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In triangle ABC ,AD is the bisector of a...

In `triangle ABC` ,AD is the bisector of `angle BAC`, meeting BC at D. If AC= 21 cm, BC = 12 cm and the length BD is 2 cm less than DC, then the length of side AB is :

A

14 cm

B

15 cm

C

18 cm

D

10 cm

Text Solution

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The correct Answer is:
B
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