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 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)

In any Delta ABC , cot(A/2),cot(B/2),cot(C/2) are in A.P. , then

The angles A, B and C of a triangle ABC are in arithmetic progression. If 2b^(2)=3c^(2) then the angle A is :

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

In DeltaABC , if a,b,c are in A.P. prove that: cot(A/2),cot(B/2), cot(C/2) are also in A.P.

If cos A=m cos B , then write the value of cot((A+B)/2)cot((A-B)/2dot)

If median AD of a triangle ABC makes angle (pi)/(6) with side BC, then the valur of (cot B-cot C)^(2) is equal to

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, 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)

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 :