The sides a, b, c of a triangle ABC are in arithmetic progression and 'a' is the smallest side. What is cos A equal to ?

The sides a, b, c of a DeltaABC are in AP and 'a' is the smallest side. What is cos A equal to?

If three sides a,b,c of a triangle ABC are in arithmetic progression, then the value of cot, A/2, cot, C/2 is (A) 1 (B) 2 (C) 3 (D) None of these

The angles A, B and C of a triangle ABC are in arithmetic progression. AB=6 and BC=7. Then AC is :

The altitudes of a triangle are in arithmetic progression, then the sides of a triangle are in

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

The side of a triangle are distinct integers in an arithmetic progression. If the smallest side is 10, the number of such triangles is-

If the sides a,b and c of a triangle ABC are in A.P.then (b)/(c) belongs to

The sides of a triangle are distinct positive integers in an arithmetic progression.If the smallest side is 10, the number of such triangles is

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