While Superman is visiting his irascible pal Batman in Gotham City, the Joker triggers an explosion at the Acme Chemical plant, miles from their current location.  Batman jumps into his Batmobile and proceeds to the route.  Superman simply takes flight… 

Polar coordinates and conversion equations, a gallery of polar curves, slopes of polar curves, polar arc length, area of polar regions, and area between polar curves.  Duration: 1:31:51