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Jonask
Construct a triangle given the three exradii
If r_a ,r_b and r_c are given then, I would find a,b,c where r_a,r_b,r_c are the exradii of the triangle relative to sides a,b and c respectively. r_a (s-a) = r_b(s-b) = r_c (s-c) here s=(a+b+c)/2