So I know that if I have a vector in Cartesian space I can find the the vector in polar coordinates (angle, length) by calculating as follows:
Angle = system angle(0,0,x,y)
length = sqrt (x * x + y * y)
This works, but is it the most efficient way? I always heard its a good idea to avoid sqrt because it takes a computer alot of work compared to other equations...
Is this the best way? or should i try something like L = x / cos(angle)