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In DeltaABC" prove that " (r(1))/(bc)+(r...

In `DeltaABC" prove that " (r_(1))/(bc)+(r_(2))/(ca)+(r_(3))/(ab)=(1)/(r)-(1)/(2R)`

A

`(1)/(r)-(1)/(2R)`

B

`1+(r)/(R)`

C

`2+(r)/(2R)`

D

`1-(r)/(2R)`

Text Solution

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