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In a !ABC cos^(2)A/2+cos^(2)B/2+cos^(2)C...

In a `!ABC cos^(2)A/2+cos^(2)B/2+cos^(2)C/2=`

A

`2-r/(2R)`

B

`2+r/(2R)`

C

`2-r/R`

D

none

Text Solution

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The correct Answer is:
B
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ML KHANNA-PROPERTIES OF TRIANGLES -Problem Set (4)(MULTIPLE CHOICE QUESTIONS)
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