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If ((3-z1)/(2-z1))((2-z2)/(3-z2))=k(k >0...

If `((3-z_1)/(2-z_1))((2-z_2)/(3-z_2))=k(k >0)` , then prove that points `A(z_1),B(z_2),C(3),a n dD(2)` (taken in clockwise sense) are concyclic.

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