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Posted on 2010-08-22

Hi

This is a bit of a basic question but i was just wondering out of curiosity.

Take i and j as unit vectors. What is i.i and j.j? The answer in both cases is 1. Is this because you assumed the 2 vectors were on top of each other and so had an ange between then of 0 degrees so the dot product = |i|.|i| . cos(0) = 1

thanks

This is a bit of a basic question but i was just wondering out of curiosity.

Take i and j as unit vectors. What is i.i and j.j? The answer in both cases is 1. Is this because you assumed the 2 vectors were on top of each other and so had an ange between then of 0 degrees so the dot product = |i|.|i| . cos(0) = 1

thanks

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