. 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 H.P.then a,b,c are in ,tan((C)/(2))

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 DeltaABC,1-tan.(A)/(2)tan.(B)/(2) =

In DeltaABC,tan.(A)/(2)+tan.(B)/(2) =

In a triangle ABC,tan((A)/(2)),tan((B)/(2)),tan((C)/(2)) are in H.P.and the sides 'a' tan((C)/(2)) are and 'c' are given by 5and 9units,then the side 'b' is

In DeltaABC , if "tan"(A)/(2)"tan"(C)/(2)=(1)/(2) , then a ,b and c are in

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))