A projectile is launched from the ground at an angle of 15^ with the horizontal and lands at a distance R . A second projectile is launched with the exact same initial speed but at a different angle (where > 15^ ). If it also lands at the same distance R , the value of is :

Step-by-step solution

For a given initial speed, there are two angles of projection that yield the same horizontal range. These two angles are complementary, meaning their sum is 90^ . Given the first angle of projection is 15^ , the second angle must be: = 90^ - 15^ = 75^ Answer: 75^