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円周率(π)の値 >>> math.pi 3.1415926535897931 30°をラジアンに換算 360°= 2πR なので >>> 30 * math.pi / 180 0.52359877559829882 関数を使う >>> math.radians(30) 0.52359877559829882 60°をラジアンに換算 >>> math.radians(60) 1.0471975511965976 >>> 60 * math.pi / 180 1.0471975511965976 π/6を度に換算 R = 180° >>> 180 / 6 30 関数を使う >>> math.degrees(math.pi / 6) 29.999999999999996 Decimalを使ってみる >>> from decimal import Decimal >>> math.degrees
I'll take a stab at answering this controversial question in a way that might satisfy the OP and benefit the mathematical community. I also want to give some opinions that contrast with or at least complement grp. Like others, I must give the caveats: I do not understand Mochizuki's claimed proof, his other work, and I make no claims about the veracity of his recent work. First, some background wh
This article contains instructions, advice, or how-to content. The purpose of Wikipedia is to present facts, not to train. Please help improve this article either by rewriting the how-to content or by moving it to Wikiversity or Wikibooks. (November 2009) Mental calculation comprises arithmetical calculations using only the human brain, with no help from a calculator or computer, or pen and paper.
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