Cotes Circle Property

x^(2n)+1=[x^2-2xcos(pi/(2n))+1]
×[x^2-2xcos((3pi)/(2n))+1]×...×
×[x^2-2xcos(((2n-1)pi)/(2n))+1].

See also

Cosine, Trigonometric Functions

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Cite this as:

Weisstein, Eric W. "Cotes Circle Property." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/CotesCircleProperty.html

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