Final answer:
The altitude of a star at the north celestial pole, when viewed from Alaska at the Arctic Circle, is 90 degrees. Its direction is directly above or north.
Step-by-step explanation:
The altitude of a star located at the north celestial pole when viewed from Alaska at the Arctic Circle would be 90 degrees. This is because the altitude is the angle between the object and the observer's horizon. For any observer on the Arctic Circle, the north celestial pole appears directly overhead, hence an altitude of 90 degrees.
The direction to see this star from Alaska at the Arctic Circle would be directly up (zenith) or north as that's where the north celestial pole lies relative to an observer's perspective on earth. Reflecting this in geographic terms, this would be directly above or north based on compass navigation.
Learn more about Celestial Navigation