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

In ΔABC, AD is the bisector of ∠BAC, meeting BC at D. If AC = 21, B

1.	In ΔABC, AD is the bisector of ∠BAC, meeting BC at D. If AC = 21, BC = 12 cm and the length of BD is 2 cm less than DC, then the length of side AB is:
A.	14 cm
B.	18 cm
C.	15 cm
D.	10 cm
Answer» D. 10 cm

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

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