If O is the circumcentre of the △ABC and R1,R2,R3 are the radii of t – InterviewSolution

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1.	If O is the circumcentre of the △ABC and R1,R2,R3 are the radii of the circumcircles of the triangles OBC,OCA and OAB respectively, then aR1+bR2+cR3 is equal to
Answer» If $O$ is the circumcentre of the $△ A B C$ and $R_{1}, R_{2}, R_{3}$ are the radii of the circumcircles of the triangles $O B C, O C A$ and $O A B$ respectively, then $\frac{a}{R_{1}} + \frac{b}{R_{2}} + \frac{c}{R_{3}}$ is equal to

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