What is the calculated minimum size AC circuit breaker or fuse for an inverter in a single phase 240 volt main service panel whose maximum continuous output current is 23.5A?

The correct answer to this question is 30 amps. Trigonometry is the subject used to calculate this question. Trigonometry is the subject related to math, and it has been around since ancient times.

A person studying this subject would be asked this question on a quiz or test for the class. This type of question would also be found on SATs, which are used to identify a high school student's intellectual level as they apply for different colleges.

IQ tests are another place where this type of question would be found, which tests how close on a scale a person is to be a genius.