If AB = 15, what is the length of ?

18
16
14
12


If AB 15 What Is The Length Of 18 16 14 12 class=

Answer :

Use Power of a point.

(can prove using similarity of the triangle)

AC*CB = DC*CE

8*7 = 4*CE

CE = 14

DE = DC+CE = 4+14 = 18

Ans: 18