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ABC is an isosceles triangle in which AB...

ABC is an isosceles triangle in which `AB = AC and (angleA)= 2(angleB) AB = 4 cm`. What is the ratio of inradius to the circumradius?

A

`1:2`

B

`(sqrt2-1):1`

C

`1:(root(2)(2)-1)`

D

none of these

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The correct Answer is:
B
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