If the cotangents of half the angles of a triangle are in A.P., then prove that the sides are in A.P.

If the angles of a triangle ABC are in A.P. then

If the angles of a triangle ABC are in A.P. , then

If the angles of a triangle are in A.P,a=2, c=4 then b=

If the angles A lt B lt C of a triangle are in A.P, then

Statement- 1: If the sines of the angles of a triangle are in A.P., then the altitudes ef the triangle are also in A.P. Statement-2: Twice the area of a triangle is equal to the product of the lengths of a side and the altitude on it.

Statement- 1: If the sines of the angles of a triangle are in A.P., then the altitudes ef the triangle are also in A.P. Statement-2: Twice the area of a triangle is equal to the product of the lengths of a side and the altitude on it.

If the angles of a triangle are in A.P., a=2 c= 4 , then b=

If the angles of a right angled triangles are in A.P. Then the sides are in the ratio

If the altitudes of a triangle are in A.P,then the sides of the triangle are in