show that the area of a regular n-gon inscribed in a circle to the area of a regular n-gon circumscribing the same circle is cos^2(pi/n) : 1

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- September 19th 2011, 12:07 AMdarandomacos question hard
show that the area of a regular n-gon inscribed in a circle to the area of a regular n-gon circumscribing the same circle is cos^2(pi/n) : 1

- September 19th 2011, 07:13 PMskeeterRe: cos question hard
- September 20th 2011, 09:35 AMdarandomaRe: cos question hard
thanks for commenting but why does red area + blue area = r^2tan(pi/n) ?

- September 20th 2011, 02:37 PMskeeterRe: cos question hard