\text{\aa}
The command \text{\aa} is used in LaTeX to produce the letter 'å', which is a lowercase letter used in several languages, including Danish, Norwegian, Swedish, and Finnish. It is often used in mathematical and scientific documents to represent variables or constants that are named after words from these languages.
The letter 'å' is used in the word 'ångstrom', a unit of length equal to 10^-10 meters.
\text{\aa}ngstrom
The letter 'å' is used in the name 'Småland', a historical province in southern Sweden.
\text{Sm\aa}land
The letter 'å' is used in the name 'Kåre', a common given name in Norway.
\text{K\aa}re