Why is latitude and longitude useful?

Ans: Latitude and longitude allow you to use two coordinates to define any point on earth. Latitude and longitude have been useful to navigators, geographers, cartographers and surveyors for a long time. Latitude and longitude are useful on a daily basis for a great number of people for global positioning system, GPS and computerised mapping. Using latitude and longitude, it is possible to calculate all sorts of things such as calculate the distances from city to city, calculate the distance from any point on earth to any other point. For example, we can calculate the distance from your house to school.