circumcentre of an euilateral triangle is at the origin and one of the vertex is rcisa then show that other two vertices are
rcis(a+2pi/3) and rcis(a+4pi/3)
circumcentre of an euilateral triangle is at the origin and one of the vertex is rcisa then show that other two vertices are
rcis(a+2pi/3) and rcis(a+4pi/3)










