A stone is thrown with an angle of elevation and a speed u from the top of a tower which has a height h. A moment later, the ball hits the ground and the point of impact is at a horizontal distance d from the bottom of tower. Show that the elevation angle satisfies the equationd^{2}g\tan^{2}\theta+p\tan\theta+q=0, where g is the gravitational acceleration, p and q are functions of the given parameters. Find p and