Polar Coordinates

Before I can state the formula I have discovered (or perhaps rediscovered ?), we need to recall a thing or two about the polar coordinate system . In the usual Cartesian coordinate system , two coordinates give us a unique position in the 2D plane, let’s call it the (x, y)-plane.

In the same way, we could just as well define a... See more

math is about ideas — formulas are just a way to express them. Once the central concept is clear, the equations snap into place. Here’s a strategy that has helped me:

• Step 1: Find the central theme of a math concept. This can be difficult, but try starting with its history. Where was the idea first used? What was the discoverer doing? This use may

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