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In DeltaABC,cos^2""A/2+cos^2""B/2+cos^2"...

In `DeltaABC,cos^2""A/2+cos^2""B/2+cos^2""C/2=`

A

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

B

`1+r/R`

C

`2+r/(2R)`

D

`1-r/(2R)`

Text Solution

Verified by Experts

The correct Answer is:
C
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