A ball is projected from point A with a velocity v0 which is perpendicular to the incline shown. Knowing that the ball strikes the incline at the point B, determine the initial speed v0 in terms of the given angle ?, the distance R, and the gravity acceleration g.
http://d2vlcm61l7u1fs.cloudfront.net/media%2F062%2F062b7b1d-7ba4-44bd-b765-b199763d9b2a%2Fphp0cpEfw.png