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With usual notations prove that in a triangle ABC, `cot(A/2)+cot(B/2)+cot(C/2)=s^2/Delta` (Doubtnut)
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Prove that `cot.(A)/(2)+cot.(B)/(2)+cot.(C)/(2)=(s^(2))/(Delta)` |Class 12 MATH | Doubtnut (Doubtnut తెలుగు)
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In a triangle ABC, prove that `(cot(A/2)+cot(B/2)+cot(C/2))/(cotA+cotB+cot(C))=((a+b+c)^2)/(... (Doubtnut)
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For any triangle ABC, prove that `(b^2 c^2) cotA + (c^2 a^2) cotB + (a^2 b^2) cotC = 0`... (Doubtnut)
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In `DeltaABC`, `(b-c)cotA/2+(c-a)cotB/2+(a-b)cotC/2=` (Doubtnut)
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Properties of Triangles - Examples 7 (Our Math Channel)
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In Delta ABC ,with usual notations prove that : b^(2) = c^(2) +a^(2) - 2 ca cos B . | CLASS 1... (Doubtnut)
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Prove that (a - b)² cos²C/2 + (a + b)² sin²C/2 = c² (Pace Edu.)
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4#Properties Of Triangles Show that Cot A + Cot B + Cot C = a² + b² + c² / 4Δ (AIMSDARETOSUCCESS)
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#themathsgurudev,Prove that in any triangle (b-c)cotA/2+(c-a)cotB/2+(a-b)cotC/2=0,CLASS 11 MATHS (GURUDEV CLASSES )
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