Being able to identify your coordinates is very important for those who travel often and especially those who are fisherman or spend a lot of time sailing. On land it is easier to find landmarks which can help you find your coordinates if you were to get lost. This can also be a helpful tool for those who hike hrough dense forests.
You can use the altitude of a polaris to find the latitude using Polaris by knowing that when Polaris (which can also be refered to as thre north star and is the brightest star in the sky) is directly above you, then you would be at the north pole which has a latitiude of 90 degrees.
Polaris is a star in the sky. It is considered to be the brightest star in the sky. Sometimes, people refer to this star as North Star, Pole Star and Alpha Ursae Minoris. It is in the constellation of Ursa Minor. Many stars are located in the same constellations so that made it easier for explorers to find direction instead of using a compass. The Polaris star is located straight over the North Pole.
With this information, you can determine the latitude. So, if you were to look up from the North Pole, you would see the Polaris star. The Polaris star can be seen on the horizon when you stand somewhere on the equator. If you see Polaris straight above you, you would at 90 degrees.