In any `triangle ABC`, prove that tan`((A-B)/(2))=((a-b)/(a+b))cot (C)/(2)`.

In triangle ABC , prove that tan((C-A)/(2))=((c-a)/(c+a))cot(B)/(2) .

In any triangle ABC, prove that tan((B-C)/2)=(b-c)/(b+c) cot frac (A)(2)

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

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

In a Delta ABC, prove that tan((A+B)/(2))=cot((c)/(2))

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

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))

If A, B, C are interior angles of triangle ABC, prove that :- tan((A+B)/2)=cot "C/2 .

If A,B,C are the interior angles of a triangle ABC, prove that (tan(B+C))/(2)=(cot A)/(2)

In any triangle ABC,prove that (a-b)/(a+b)=(tan((A-B)/(2)))/(tan((A+B)/(2)))