1. The problem statement, all variables and given/known data A ball is thrown at angles 45° and 30° above the horizontal with the same initial speed. What multiple of the horizontal range at angle 30° is that at angle 45°? 2. Relevant equations Trigonometry formula 3. The attempt at a solution I think that first step is to divide the initial speed into horizontal component and vertical component. Let the initial speed be u Horizontal speed of 30° angles : u x cos 30° = 1 / 2 u Horizontal speed of 45° angles : u x cos 45° = √2 / 2 u After this I'm not sure what to do next.. Since the question didn't provide time, I can't use the kinetic equation formula. Can anyone give me a hint about what should I do next?