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23. Two circles intersect at A and B. The tangent to the first circle at A cuts the second circle at C and the tangent to the second circle at A cuts th first circle at D. prove that tri ABC and tri DBA are similar.
23. Two circles intersect at A and B. The tangent to the first circle at A cuts the second circle at C and the tangent to the second circle at A cuts th first circle at D. prove that tri ABC and tri DBA are similar.