Question : Two bodies are projected from the same point with equal speeds in such directions that they both strike the same point on a plane whose inclination is β. If α be the angle of projection of the first body with the horizontal the ratio of their times of flight is
(A) \dfrac{\cos \alpha }{\sin \left( \alpha +\beta \right) }
(B) \dfrac{\sin \left( \alpha +\beta \right) }{\cos \alpha }
(C) \dfrac{\cos \alpha }{\sin \left( \alpha -\beta \right) }
(D) \dfrac{\sin \left( \alpha -\beta \right) }{\cos \alpha }
Answer : option (D)
Solution :
