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I(n) is the area of n sided refular poly...

`I_(n)` is the area of n sided refular polygon inscribed in a circle unit radius and `O_(n)` be the area of the polygon circumscribing the given circle, prove that `I_(n)=O_(n)/2(1+sqrt(1-((2I_(n))/n)^(2)))`

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A DAS GUPTA-Miscellaneous Exercises-Exercise
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