Jack and Jill decided to hide a cache together and after placing it they parted ways both leaving on foot in opposite directions.
A short while later they both realised that had forgotten to take a reading for the coords so both stopped in their tracks at the same time and same distance from the cache and took a reading of their current locations.
Jack took a reading of S33 20.980 E115 43.618 and Jill a reading of S33 21.917 E115 44.262.
Based on their readings they knew exactly where they had placed the cache.