pre-reqs: trig Think of the following two things. Temperature and wind speed. These are two different things that you could measure, but there is one big difference. Wind speed has two parts to it - ...

I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those ...

Learn how to find the unit vector of a vector written as a linear combination. I make short, to-the-point online math ...