Can you find your location using the angle between compass bearings?
Sometimes compasses are less accurate than we would like them to be. They can be thrown off by their surroundings, have their polarity reversed, become demagnetized, develop air bubbles or be taken to the wrong hemisphere.
However in all of these cases it should be possible to have whatever is effecting the compass either affect all of the bearings equally or to use it as protractor to measure the angle between the bearings.
In either case whether or not we know that our bearings are correct, we could know the angle between the bearings to a fair amount of accuracy.
Would that be enough to find your location on a map, as opposed to having accurate bearings?