You already got it don't you?
If , then:
since and already. Just a matter of dealing with which you've promptly handled.
How do I jump from that to . I realize it's probably very simple. If someone could just help me take the leap I would appreciate it!
I guess I know that the dot product is a scalar so I'm wondering..I don't know...geez louise.
P.S. It's like 1 in the morning, and this is my last quesiton