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ABC is an isosciles triangle a circle is...

ABC is an isosciles triangle a circle is such that it parses though vertex C and AB acts as a tangent at D for the same circle AC and BC intersects the circle at E and F respectively AC = BC = 4 cm. and AB = 6 cm. also D is the mid-point of AB. What is the ratio of EC : `(AE+AD)`?

A

`1 : 2`

B

`1 : 3`

C

`2 : 5`

D

none of these

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The correct Answer is:
B
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