What is the value of Arccos(-1)?

The correct answer to this question is π. The answer to this question could be written in two ways. The first ways are just as the symbol, which is π. The second way is 3.14159265…, which is decimal form.

People that have studied math would know the symbol π to be representative of Pi. It is a mathematical constant. Pi is also known as Archimedes' constant. The symbol π is a Greek symbol, while the English language defines Pi as Pie.

All over the world, March 4 is Pi day, where mathematicians and math lovers celebrate the unique and versatile constant.