If I be the incentre of the triangle ABC, and a, b, c be the lengths o – McqOptions

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1.	If I be the incentre of the triangle ABC, and a, b, c be the lengths of the sides BC, CA and AB respectively, then \(a\overrightarrow {IA} + b\overrightarrow {IB} + c\overrightarrow {IC} \) equals
A.	\(\overrightarrow 0 \)
B.	\(\overrightarrow {AB}\)
C.	\(\overrightarrow {AC}\)
D.	\(\overrightarrow {AD}\)
Answer» B. \(\overrightarrow {AB}\)

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