a horse runs along a circle with a speed of 20 km / h . a lantern is at the center of the circle . A fence is along the tangent to the circle at the point at which the horse starts . Find the speed with which the shadow of the horse moves along the fence at the moment when it covers 1/8 of the circle in km/h.
a horse runs along a circle with a speed of 20 km / h . a lantern is at the center of the circle . A fence is along the tangent to the circle at the point at which the horse starts . Find the speed with which the shadow of the horse moves along the fence at the moment when it covers 1/8 of the circle in km/h.