Derivation of the polar equation of an ELLIPSE with radial distance referenced from a focus to a point on the locus and angle measured counter-clockwise with respect to the positive semi-major x-axis. Derivation and verification is included.
Part 1 can be found here:
https://www.youtube.com/watch?v=4z6oUkKjfjY
Part 1 can be found at:
https://www.youtube.com/watch?v=c1RAa4wiMI8
