UPSC NDA Math Model Paper 5
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Question : 17 of 120
Marks:
+1,
-0
If A, B and C is three angles of a ΔABC, whose area is Δ. Let a, b and c be the sides opposite to the angles A, B and C respectively. If s =
= 6
s 2 ( s − a ) ( s − b ) ( s − c )
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