The Attempt at a Solution
I could not figure out the first part, though i know that distance is λn, λ being any non-zero scalar. But i could not figure out the first question it self.
So my book says
Lets suppose,
We have two vector v and u
w=projection of u ev= unit vector θ=angle between the two
w=(u.ev)ev or w=( (u.v)/(v.v) )v
Now, the second equation is fairly easy to understand if we understand the first one because ev= v / |v|
What is...