" (ii) "cot((A)/(2))-cot((B)/(2))=((b-a)s)/(Delta)

cot((A)/(2))-cot((B)/(2))=(b-a)/(Delta)(M),M=

In a triangle ABC, prove that the ratio of the area of the incircle to that of the triangle is pi:cot((A)/(2))cot((B)/(2))cot((C)/(2))

In a triangle ABC, if r^(2)cot((A)/(2))cot((B)/(2))cot((C)/(2))=

In a triangle ABC if cot((A)/(2))*cot((B)/(2))=c,cot((B)/(2))*cot((C)/(2))=a and cot((C)/(2))*cot((A)/(2))=b then (1)/(s-a)+(1)/(s-b)+(1)/(s-c)=

Prove that cot.(A)/(2)+cot.(B)/(2)+cot.(C)/(2)=(s^(2))/(Delta)

Delta ABC;(b-c)cot((A)/(2))+(c-a)cot((B)/(2))+(a-b)cot((C)/(2))

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

In a Delta ABC, if cot((A)/(2)):cot((B)/(2)):cot((C)/(2))=1:4:15 then the greatest angle is

In Delta ABC the value of (cot((A)/(2))cot((B)/(2))-1)/(cot((A)/(2))cot((B)/(2))) is

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))