U Let ABC be the triangle with AB = 1, AC = 3 and ZBAC == . If a circle of radius r> 0 touches the sides 2 AB, AC and also touches internally the Circumcircle of the triangle ABC, then the value of r is

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πU Let ABC be the triangle with AB = 1, AC = 3 and ZBAC == . If a circle of radius r> 0 touches the sides 2 AB, AC and also touches internally the Circumcircle of the triangle ABC, then the value of r is

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