Now separating the vector v outside the parentheses into the component vcosθ directed along the vector EE, and two perpendicular components, \(v \sin\theta \...Now separating the vector v outside the parentheses into the component vcosθ directed along the vector EE, and two perpendicular components, vsinθcosφ and vsinθsinφ, we see that the integrals of the last two components over the angle φ give zero.