(a) Let be the area of a polygon with equal sides inscribed in a circle with radius r

Chapter 5, Problem 5.1.26

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(a) Let be the area of a polygon with equal sides inscribed in a circle with radius r. By dividing the polygon into congruent triangles with central angle , showthat An ! 12 nr 2 sin'2#n ( (b) Show that limnl' An ! #r . [Hint: Use Equation 3.3.2.]

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