If the sides a,b,c of a triangle are in Arithmetic progressioni then find the value of `tan (A/2)+tan(C/2)` in terms of `cot(B/2)`

If three sides a,b,c of a triangle ABC are in arithmetic progression, then the value of cot(A/2), cot(B/2), cot(C/2) are in

If the angles A, B and C of a triangle are in an arithmetic progression and if a, b and c denote the lengths of the sides opposite to A, B and C respectively, then the value of the expression (a)/(c) sin 2C + (c)/(a) sin 2A is

In a triangle ABC if b+c=3a then find the value of cot(B/2)cot(C/2)

A triangle ABC is right angled at B. Find the value of (sec A.sin C - tan A.tan C)/(sin B)

If in triangle ABC (r)/(r_(1))=(1)/(2), then the value of tan(A/2)(tan(B/2)+tan(C/2)) is equal to

In any Delta ABC the value of 1-tan""B/2 tan""C/2 is equal to :-

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 in the triangle ABC, "tan"(A)/(2), "tan"(B)/(2) and "tan"(C )/(2) are in harmonic progression then the least value of "cot"^(2)(B)/(2) is equal to :

If A,B,C are angles of a triangle ,then the minimum value of tan^(2)(A/2)+tan^(2)(B/2)+tan^(2)(C/2) , is

A triangle ABC is right angled at B, find the value of (sec A . cosec C - tan A . cot C)/(sin B)