" 8."quad cot A+cot B+cot C=(a^(2)+b^(2)+c^(2))/(4Delta)

With usual notations,prove that in a triangle ABC cot A+cot B+cot C=(a^(2)+b^(2)+c^(2))/(4Delta)

Prove that cot A + cot B + cot C = (a^(2)+b^(2)+c^(2))/(4/_\) .

4Delta(cot A+cot B+cot C)=a^(2)+b^(2)+c^(2)

In DeltaABC , prove that: cot\ A/2+cot\ B/2+cot\ C/2=((a+b+c)^(2))/(4Delta)

In DeltaABC , prove that: cot\ A/2+cot\ B/2+cot\ C/2=((a+b+c)^(2))/(4Delta)

In a triangle ABC,prove that (cot((A)/(2))+cot((B)/(2))+cot((C)/(2)))/(cot A+cot B+cot(C))=((a+b+c)^(2))/(a^(2)+b^(2)+c^(2))

a^(2)cot A+b^(2)cot B+c^(2)cot C=

a^(2) cot A+ b^(2) cot B+ c ^(2) cot C =

In a triangle A B C, if cot A, cot B, cot C are in A.P, then a^(2), b^(2), c^(2) are in

If A+B+C=pi , prove that : cot( A/2)+ cot(B/2) + cot( C/2) = cot( A/2) cot(B/2) cot(C/2)