Tanc function is a math thing that tells you how much tilting or leaning is happening. It's like a game where you try to stand on one leg and not fall over. If you tilt your body too much, you might fall, but if you tilt just a little bit, you can still balance.
The tanc function helps you figure out how much you're tilting by using a special math formula. It takes in an angle (how much you're tilting) and gives you a number as an answer. The bigger the number, the more you're tilting.
It's kind of like a report card for your tilting skills – if you get a high number, you need to work on not tilting so much.
Overall, the tanc function is used to help solve math problems that involve tilting or leaning, and it's a fancy way of measuring how much something is tilting.