ABCD is a cyclic quadrilateral.AB and DC when produced meet at P.again AD and BC when produced meet at R.The circumcircles of triangles BCP and CDR intersect at T. prove that P,T,R are collinear.
i have a soloution,but i want to use the Menelaus theorem or some trignometry to prove it. Is it possible to do so???(Wondering)
please HELP!