A question: If you have two vectors and they are perpendicul

[Faded-Maximus]

If you have two vectors and they are perpendicular, if you use the dot product on them they will add to zero. How can you determine if they are parallel?

 

[pka]

Two vectors are parallel if they are non-zero multiples of each other.

 

[skeeter]

Re: A question: If you have two vectors and they are perpend

If you have two vectors and they are perpendicular, if you use the dot product on them they will add to zero. How can you determine if they are parallel?

perpendicular vectors ... dot product = 0

parallel vectors ... dot product = +/- (product of their respective magnitudes). {(+) if they have the same direction, (-) if they have opposite directions}.