1.

O is the circumcenter of Δ ABC and R1,R2 and R3 are the radii of the circumcircles of the triangles OBC, OCA and OAB. Then aR1+bR2+cR3= .

Answer»

O is the circumcenter of Δ ABC and R1,R2 and R3 are the radii of the circumcircles of the triangles OBC, OCA and OAB. Then aR1+bR2+cR3= .



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