Jordan's inequality

In mathematics, Jordan's inequality, named after Camille Jordan, states that[1]

unit circle with angle x and a second circle with radius around E.

It can be proven through the geometry of circles (see drawing).[2]

Notes

  1. Weisstein, Eric W. "Jordan's inequality". MathWorld.
  2. Nach Feng Yuefeng, Proof without words: Jordan`s inequality, Mathematics Magazine, volume 69, no. 2, 1996, p. 126

Further reading

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