Final answer:
The altitude of Polaris above the horizon indicates that the observer is at a latitude of 28 degrees since Polaris' altitude equals the observer's latitude.
Step-by-step explanation:
If you measured the altitude of Polaris to be exactly 28 degrees above the horizon, you are currently located at the latitude of 28 degrees.
The altitude of Polaris above the horizon corresponds directly to the latitude of the observer in the Northern Hemisphere.
This is because Polaris is located almost directly above the north celestial pole, making it a useful guide for navigation and determining one's latitude. Furthermore, since the Earth rotates, Polaris remains at the same altitude as long as the observer stays at the same latitude.