The bearing of B from A in each case are:
a) 50°
b) 115°
c) 137°
The bearing?
To find the bearing of point A from point B, given the bearing of point B from point A, you can use the following formula:
Bearing of A from B = Bearing of B from A + 180°
a) We see that the bearing of B from A is clearly 50°
b) We see that the bearing of B from A is clearly 115°
c) We see that the bearing of B from A is clearly 137°