Final answer:
The Tropic of Cancer does not equal 23.5 degrees; it is located approximately at that latitude.
Step-by-step explanation:
The Tropic of Cancer does not equal 23.5 degrees. The Tropic of Cancer is located at approximately 23.5 degrees North latitude, while the other options mentioned - Earth's magnetic pole axis, Tropic of Capricorn, and amount of tilt of Earth's spin axis - are all related to the Earth's axial tilt, which is indeed approximately 23.5 degrees.
Learn more about Tropic of Cancer and Earth's axial tilt