What is the dot product of two parallel vectors?

Answer 1

the dot product of two vectors is |a|*|b|*cos(theta) where | | is magnitude and theta is the angle between them.

for parallel vectors theta =0 cos(0)=1

so the answer is |a|*|b| or sqrt(a1^2+a2^2...)*sqrt(b1^2+b2^2...)

Thanks!

Alex B.