Terence Martin (OdatNurd)

With the basics of trigonometry] out of the way, lets delve into something that's a little bit more advanced and totally points out that what I spouted about trig was disingenuous at best and a lie at worst; The Law of Cosines!

So now we have gone over what a vector is and also how to perform simple vector operations, so it's time to get complicated: the Dot product!