Final answer:
The information provided lacks context for determining the angles of depression; hence, a precise answer cannot be given without further details or a visual representation.
Step-by-step explanation:
The question appears to be asking about angles of depression, which are measured downward from the horizontal. However, the information provided seems to relate to projectile motion and diffraction patterns, rather than angles of depression. Since there is no clear reference to the context for angles 1, 2, 3, and 4, it is impossible to accurately determine the angles of depression without additional details or a diagram. An angle of depression is typically used in context with observational viewpoints, such as looking down from a height to an object at a lower level. The angle between the line of sight and the horizontal line is called the angle of depression.