Mathematics for IGCSE & O level - Scale Drawings (Section 2 - No. 46)
If you know the bearing of a point from a location, and need to find the bearing of the location from the point, what mathematical operation will you likely use?
Addition only.
Subtraction only.
Addition or subtraction of 180 degrees.
Multiplication
Paliwanag
You add or subtract 180 degrees, depending on the bearing value.