First of all, this post was inspired by ViHart, if you don't know who she is, she's got some pretty interesting mathematical videos on youtube, so check that out. Ok. Go back to when you were in elementary school and you had to memorize all these equations with pi, and you sort of got it, but you didn't really understand. Well, that's not your problem. It's not the teacher's problem either. It's pi's problem. The problem with pi and pi day is just like the problem with Christopher Columbus and Columbus Day. Sure, he was a real man that did some stuff, but he DIDN'T discover America, he DIDN'T discover that the world was round, and, let's face it, he was kind of a bad person. Radians are a very convenient way of measuring angles. Two pi radians in a circle, pi radians a half circle. Now say I'm baking I pie, and I invite my friends over to have some. "How much pi do you want?" Your friend wants a tenth of the p...
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