ASU 069 All Russian MO 1965 rocker hits the airplane-spy
Source:
June 19, 2019
algebra
Problem Statement
A spy airplane flies on the circle with the centre and radius km. Its speed is km/h. At a certain moment, a rocket , that has same speed with the airplane, is launched from point and moves along on the straight line connecting the airplane and point .How long after launch will the rocket hit the plane?