Final answer:
The expressions 43.3² and 12° are not equivalent as one is a numerical value resulting from squaring 43.3, and the other is an angle measuring 12 degrees.
Step-by-step explanation:
The expressions 43.3² and 12° are not equivalent. The first expression represents the number 43.3 squared, which is a mathematical operation resulting in a value of 1875.69. The second expression represents an angle measuring 12 degrees. It appears there may have been a typo in the question, and the student might have intended to ask about the equivalence of two different angles or two mathematical expressions involving exponents or degrees. However, based on the information provided, these two expressions are not equivalent and belong to different mathematical contexts.
When comparing angles, such as 23.6° and 53.1°, it's straightforward to see that these values represent different measures and therefore are not equivalent. Furthermore, in the provided reference information, several different angles are mentioned in degrees, but none appear to be related to the initial query of the expressions 43.3² and 12°.