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# FP3 Vectors question

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1. How do I do part (i)? I do not underestand how the vector AB and AC are obtained from their distances
2. (Original post by Darcy1)

How do I do part (i)? I do not underestand how the vector AB and AC are obtained from their distances
Using the equation of the line, what's the vector AB in terms of lambda?

Remember that the vector equation of a straight line gives you the general form of a position vector r of any point on that line.

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