Answer:
Maximum frequency deviation is 2616.29509 Hz
Maximum frequency deviation=(4000-3000)cos45
Max frequency deviation=2616.29509 Hz
It’s d, looks like you got it already! With ratios, just pay attention to not only the numbers but order of the words as well, so you can be sure the ratio follows the problem.
Answer:
1740 is the time on a 24 hour clock or military time