If the angles A , B and C of a triangle are in A.P
and if a, b and c denote the lengths of the sides
opposite to A, B and C respectively , then the value
of [ (a/c) sin 2C +(c/a) sin 2A ] is
If the angles A , B and C of a triangle are in A.P
and if a, b and c denote the lengths of the sides
opposite to A, B and C respectively , then the value
of [ (a/c) sin 2C +(c/a) sin 2A ] is