Babylonians were especially brilliant with math, and they invented the idea of zero as well as the base 60 number system we still use today to describe time (where there are 60 minutes in an hour).

Along the top line (height) of the triangle, the student has written 3.75, while the vertical line (base) is indicated ... which were major areas of early mathematics education.

However unlike today’s trigonometry, Babylonian mathematics used a base 60, or sexagesimal system, rather than the 10 which is used today. Because 60 is far easier to divide by three ...