TS EAMCET 10-Sep-2020 Shift 2 Solved Paper

Section: Mathematics
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Question : 27 of 160
 
Marks: +1, -0
In a
∆ABC,‌
∆2
a2+b2+c2
(‌
1
r12
+‌
1
r22
+‌
1
r32
+‌
1
r2
)
=
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