Bearing...Part 2

[nycmathguy]

I am having trouble with the terminology.
At B we read:

"This angle is the bearing of A from B."

What is the difference between the following two statements?

1. This angle is the bearing of A from B.

2. This angle is the bearing of B from A.

I see no difference between A from B and B from A.

You say?

 

[MathLover1]

imagine you are standing at point A, facing North, it's 0°
then you want go toward B, making an angle (for example 120° )
when you come to point B, you have to make a turn 180° to go back on line segment BA to go from B to A
that means bearing is 120° +180° =300°

 

[nycmathguy]

imagine you are standing at point A, facing North, it's 0°
then you want go toward B, making an angle (for example 120° )
when you come to point B, you have to make a turn 180° to go back on line segment BA to go from B to A
that means bearing is 120° +180° =300°

I like your colorful geometric interpretations.