When asked for the altitude for the moon would I use arc degrees to measure that?

Only some of the people on the daytime side of Earth can witness a solar eclipse when it occurs, whereas all the people on the nighttime side of Earth can witness a lunar eclipse when it occurs. Why is this so?

During which phase(s) can the Moon be seen high up in the sky during the day? [To answer the question, consider the central period of the day: 10 am to 2 pm]

Two planes take off at the same time from an airport. The first plane is flying at 210 miles per hour on a bearing of S 45.0° E. The second plane is flying in the direction S 45.0°W at 250 miles per hour. If there are no wind currents blowing, how far apart are they after 4 hours? (Round your answer to two decimal places.) mi What is the bearing of the second plane from the first after 4 hours? (Round your answer to one decimal place.) S ° W