. In a `DeltaABC, If tan (A/2) , tan(B/2), tan (C/2)`, are in H.P.,then a,b,c are in

In a Delta ABC , If tan\ A/2, tan\ B/2, tan\ C/2 are in A.P. then cos A, cos B, cos C are in

In a Delta ABC tan ""A/2, tan ""B/2, tan ""C/2 are in H.P., then the vlaue iof cot ""A/2 cot ""C/2 is :

In Delta ABC if tan(A/2) tan(B/2) + tan(B/2) tan(C/2) = 2/3 then a+c

In DeltaABC,(a+b+c)(tan(A/2)+tan (B/2))=

if ABC is a triangle and tan(A/2), tan(B/2), tan(C/2) are in H.P. Then find the minimum value of cot(A/2)*cot(C/2)

if ABC is a triangle and tan(A/2), tan(B/2), tan(C/2) are in H.P. Then find the minimum value of cot(B/2)

In DeltaABC , prove that: s^(2).tan(A/2)tan(B/2)tan(C/2)=Delta

In a DeltaABC , if B=90^(@) , then tan^(2).(A)/(2) =

In a DeltaABC , if a=18, b = 24, c=30 , find : tan (A/2) , tan( B/2), tan (C/2)

In a DeltaABC,(a+c)/(a-c)tan(B/2) is equal to