MathGroup Archive 2007

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Vieta infinite product formula

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  • Subject: [mg83805] Vieta infinite product formula
  • From: Andrzej Kozlowski <akoz at>
  • Date: Sat, 1 Dec 2007 05:39:40 -0500 (EST)

  I just discovered, to my disappointment, that Mathematica does not  
know the classic Vieta infinite product formula:

  Sin[x]/x == Product[Cos[x]/2^k, {k, 1, Infinity}]

Shouldn't something be done about that?

Andrzej Kozlowski

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