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 18th 2011, 11:07 PMdarandomacos 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, 06:13 PMskeeterRe: cos question hard
- September 20th 2011, 08:35 AMdarandomaRe: cos question hard
thanks for commenting but why does red area + blue area = r^2tan(pi/n) ?

- September 20th 2011, 01:37 PMskeeterRe: cos question hard