Final answer:
Without additional context, it's impossible to determine the measure of angle COA. The information provided relates to different scenarios involving angles but doesn't directly answer the question posed. Context such as a diagram or detailed description is needed to identify the correct measure of angle COA.
Step-by-step explanation:
The question "What is the measure of angle COA?" seems to be missing specific details to provide a precise answer. However, by analyzing the provided reference information related to projectile motion, angles of rotation, and angles in the sky, we can understand that it relates to angles and their measurements. Without the context of what angle COA refers to, we can't accurately choose between options (A) 140°, (B) 150°, (C) 160°, or (D) 170°.
For instance, when considering the optimal angle for projectile motion, the range is maximized at a 45° launch angle. If angle COA were related to projectile motion, we could guess that angle COA might be less than this optimal angle, but without specific details, it remains an uneducated guess.
Moreover, for the question about the angle of rotation between two points at a given arc length and radius, trigonometry is used to calculate the measure, and does not directly provide the answer to the measure of angle COA. Similarly, questions about angles in the sky and the angle between vectors won't give us a direct indication of the measure of angle COA without additional context.