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In Delta ABC, 1/r1+1/r2+1/r3=...

In `Delta ABC, 1/r_1+1/r_2+1/r_3=`

A

`Delta //s`

B

`1 //r`

C

`2//r`

D

`3//r`

Text Solution

Verified by Experts

The correct Answer is:
B
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