Trignometry

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Joined:	3 Apr 2008
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4 Apr 2008 14:28:37 IST

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please some one solve this qs for me.

None

Co,C1,C2,C3.........Cn are n+1 concentric circles of radii Ro,R1,R2,R3.....Rn.

A is a fixed point and a line through A meets Ck at PkQk for k=1,2...n.

If 1/n(SUM (APk . AQk)=APo.AQo (k varies from 1 to n)

then Ro=?

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