How to define bearing?

Question

what is the definition of bearing in trigonometry?

Answer 1

UNFORTUNATELY, bearing is not quite the same language as is trigonometry. For bearings, north is taken as zero degrees (or 360), east is 90, south 180 and west 270. Bearings are expressed as "x" degrees (a direction one quadrant from the next direction) of (the base direction). That sound confusing, but a few examples will suffice.
Due East (no degrees north or south of east)
20 degrees East of North. If you face north, the bearing is at an angle of 20 degrees where the left line of the apex is the north-south line.
45 degrees south of East. If you face east, the bearing is at an angle of 45 degrees where the left line of the apex is the east-west line.
So sail ye maties.

Answer 2

bearing is basically the direction