Vectors

Asked by  | 19th Jul, 2012, 08:33: PM

Expert Answer:

Use parallelogram law of vector addition.
In a triangle,
vectors: AB + BC = AC.
Thus Vectors AB + BC + AC = AC + AC = 2AC
Taking modulous, |AC| = a
Thus n = 2.

Answered by  | 19th Jul, 2012, 11:25: PM

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