How i solve this question of Triangles chapter of exercise 6.6 of ncert math of question no.8 give me the best way to solve this problem i think it is very important for class 10th In Fig. 6.62, two chords AB and CD of a circle intersect each other at the point P (when produced) outside the circle. Prove that: (i) ∆ PAC ~ ∆ PDB (ii) PA . PB = PC . PD.