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Answer:

c is much longer vector than b; it is likely that a · c is the larger.


Length Affects Dot Product

three vectors, separated by 30 degrees

The answer is not only likely, but correct.

The dot products are:

There are two properties tangled up in the dot product :

We would like to get just the angle by somehow removing the influence of length.


QUESTION 3:

What is the normal method for removing the influence of length?