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)`

In any triangle ABC prove that cot(A/2)+cot(B/2)+cot(C/2)=cot(A/2)cot(B/2)cot(C/2)

If A+B+C=pi , prove that: cot^2 A+cot^2 B + cot^2 C ge 1

if A+B+C=pi prove that cot((A)/(2))+cot((B)/(2))+cot((C)/(2))=cot((A)/(2))xx cot((B)/(2))xx cot((C)/(2))

Prove that (b + c -a) (cot.(B)/(2) + cot.(C)/(2)) = 2a cot.(A)/(2)

If A+B+C= 90^@ , Prove that cot A+cot B+cot C=cot A cot B cot C

Prove :r(cot A)/(2)+a=r(cot B)/(2)+b+r(cot C)/(2)+c

If A+B+C=pi, show that : tan.(A)/(2)tan.(B)/(2)+tan.(B)/(2)tan.(C)/(2)+tan.(C)/(2)tan.(A)/(2)=1 Hence deduce that : cot.(A)/(2)+cot.(B)/(2)+.cot.(C)/(2)=cot.(A)/(2).cot.(B)/(2)tan.(C)/(2) .

cot A+cot B+cot C

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=