1.

If R_(1)is the circumradius of the pedal triangle of a given triangle ABC, and R_(2)is the circumradius of the pedal triangle of the pedal triangle formed, and so on R_(3), R_(4)……then the value of sum_(i=1)^(infty) R_(i), where R (circumradius) of Delta ABC is 5 is

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Answer :B


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