Math utilities problem


I’m at the chapter of zombie conga with the math utilities.
I really dont understand how the math utilities work. Is it a big problem to make my own
future mini games if i dont understand these math utilities?

Well its just another class that is imported which has useful functions, in this case I believe it is mostly used for trig functions.

Do you mean you dont understand how the trig functions work?

I dont understand how the code that is in utility folder makes the code shorter for the CGPoint
code i dont understand the link between it.