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In any triangle ABC, r(1),r(2)+r(2)r(3)+...

In any triangle `ABC, r_(1),r_(2)+r_(2)r_(3)+r_(3)r_(1)=....`

A

`(Delta^(2))/(r^(2))`

B

`(Delta)/(r)`

C

`(2Delta)/(r)`

D

`Delta^(2)`

Text Solution

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The correct Answer is:
A
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