i have vector "a"
it make no sense
the formula says |a|*|a|*cos0=a^2 (not 1)
But cos0 = 1,
so that means |a|*|a| = a^2, which is correct.
Where does your a*a=1 come from?
from my professor in physics :(
Well, what was the context, then?
What else was he/she talking about at the time?
Unit vectors? Basis vectors? General vectors? Hilbert spaces?
he just stated that if we multiply scalarly a vector(in general) by itself
we will get 1
hmm … that's obviously rubbish …
i suppose he must have been thinking of applying that to some specific equation that he didn't actaully mention.
ill try to confront him with this problem
Are you sure he didn't say a unit vector?
unit vector represents a single unit with the direction of a certain axes
i think you are correct
why their multiplication equals 1?
nobody said their length is 1
only that its the smallest unit of length with a direction
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