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Q. Let Po,P1,P2,P3,P4,.........,P(n-1) are vertices of aregular polygon in a unitcircle,then prove that-(a)PoP1*PoP2*PoP3*..............PoP(n-1)=n(b)sin pi/n * sin 2pi/n * sin3pi/n*........*sin[(n-1)pi/n]=2/2^(n-1).
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