1.

In ΔABC, AD, the bisector of ∠A, meets BC at D. If BC = a, AC = b and AB = c, then BD – DC =

A. a(c - b)/(c + b)
B. ab/(b + c)
C. ac/(b + c)
D. a(c + b)/(c - b)
Answer» B. ab/(b + c)


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