Which two cities are located north of 15°N and east of 105°E?

Two major cities that are located north of 15°N latitude and east of 105°E longitude are Hanoi, the capital of Vietnam, and Vientiane, the capital of Laos. Hanoi is situated at approximately 21.0285°N, 105.8542°E, while Vientiane is located at about 17.9757°N, 102.6331°E. Both cities are in Southeast Asia and meet the geographical criteria specified.

• The Earth is divided into a grid of latitude and longitude. Latitude lines run east-west around the globe and are used to determine how far north or south a place is from the Equator, which is 0 degrees latitude. The Equator is the imaginary horizontal line that divides the Earth into the Northern Hemisphere and the Southern Hemisphere. Locations north of the Equator are assigned a northern latitude, which is why we use "N" (for north) in the coordinates.
• Longitude lines run from the North Pole to the South Pole and are used to determine how far east or west a place is from the Prime Meridian, which is 0 degrees longitude and passes through Greenwich, England. Longitude lines to the east of the Prime Meridian are assigned an eastern longitude and are marked with "E" (for east).
• Thus, when we say that Hanoi and Vientiane are north of 15°N and east of 105°E, we're referring to the fact that they lie in the Northern Hemisphere and are east of the line passing through the 105th meridian east of Greenwich. This form of geographical notation helps us accurately pinpoint locations on the Earth's surface.