If A, B, C are the angles of a triangle ABC and if `cosA=(sinB)/(2sinC)`, show that the triangle is isosceles.

In a triangle A B C , if cos A=(sinB)/(2sinC) , show that the triangle is isosceles.

In a A B C , if cosC=(sinA)/(2sinB) , prove that the triangle is isosceles.

If in a triangle ABC , cosA=(sinB)/(2sinC) then the triangle ABC , is

In a triangle A B C , if acosA=bcosB , show that the triangle is either isosceles or right angled.

In triangle ABC , if cosA+sinA-(2)/(cosB+sinB)=0 then prove that triangle is isosceles right angled.

If in a triangle ABC, (cosA)/a=(cosB)/b=(cosC)/c ,then the triangle is

In a triangle ABC if sinA+sinB+sinC = 3^(3/2)/2 prove that the triangle is equilateral.

If the bisector of the exterior vertical angle of a triangle be parallel to the base. Show that the triangle is isosceles.

If the bisector of the exterior vertical angle of a triangle be parallel to the base. Show that the triangle is isosceles.

If A,B,C are angles of a triangle, then 2sinA/2cos e c B/2sinC/2-sinAcosB/2-cosA is