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EAMCET Engineering 2004 Solved Paper

Section: Mathematics
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Question : 114 of 160
 
Marks: +1, -0
In a â–³ABC, the correct formulae among the following are
I. r=4Rsin‌‌
A
2
sin‌‌
B
2
sin‌‌
C
2

II. r1=(s−a)‌tan‌
A
2

III. r3=‌
∆
s−c

Validate
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