How do you use a sextant at sea to determine your position?

To use a sextant at sea, you measure the angle between a celestial body (like the sun or a star) and the horizon. By comparing this angle with the known position of the celestial body at a specific time, you can calculate your position on the Earth's surface. This method is known as celestial navigation and has been used by sailors for centuries to determine their location on the open sea.