What type of math is used in being an actress?

Answer 1

That's a disingenuous question. You are probably aware, or have a strong suspicion, that the day-to-day activities involved in the performing arts require no more than a rudimentary knowledge of counting numbers. Presumably if a stage director tells you to enter "in three" you can find it. The larger question is how much math you need to be a functioning member of society, no matter your profession. Math, at its heart, is mostly the manipulation of numbers. So is money. If you are planning to make so much money from acting that you can hire people to manage your income, good luck. Fewer than one percent achieve that. Learn about economics. Learn about investments. At the very least, if one of your roles turned out to be a mathematician, you'd want to be prepared for the audition.