Answer:
a) 050
b) 115
c) 223
Explanation:
Given diagrams in which the angles at A to B are shown, you want the 3-digit bearing of point B from A.
Bearing
The bearing is the angle in degrees measured clockwise from north. It is a positive value in the range 0 ≤ bearing < 360. This problem statement is asking for it to be expressed as a 3 digit integer, so angles less than 100° will have leading zeros.
No calculation is necessary. You can read the angles directly from the diagram:
a) 050
b) 115
c) 223
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Additional comment
Navigation angles can also be expressed other ways. For example, the angle in (a) could be N 50 E, indicating a direction 50° east of north. Sometimes this is also seen as E 40 N, indicating 40° north of east.
This form, using E or W as the base from which the angle is measured, is less often used. For many purposes, it is avoided in favor of using N or S for the base direction. The only advantage is that the angle value is 45 degrees or less, so can always be expressed as 2 digits.
Similarly, the angles in (b) and (c) could be S 65 E, and S 43 W.