orizontal ground

An automated weapon located at the point O on the horizontal ground identified an enemy’s

aircraft flying horizontally with the velocity U and the same instant the coordinate of the aircraft

Just $7 Welcome
Order Now

(d , h ) corresponding to the point O. Instantly the weapon projects a bullet in the angle to the

horizontal and it colliedes the aircraft when it comes to its maximum height h .Show that

d= 2h (cosec + cot )