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 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))

If a^(2), b^(2), c^(2) are in A.P., then : (cos A)/a, (cos B)/b, (cos C)/c are in

In a /_ABC, if (tan A)/(2),(tan B)/(2),(tan C)/(2)are in Adot P; then show that cos A,cos B,cos C are in AP

tan A ++ tan B + tan C- (sin (A + B + C)) / (cos A cos B cos C) =

Delta ABC,tan A+tan B+tan C=6 and tan A tan B=2 then the triangle is

In Delta ABC, If tan B tan C+tan C tan A+tan A tan B=sqrt(3)tan A tan B tan C then the triangle is

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 triangle ABC,tan A+tan B+tan C=