Most of you maybe know, right angle is 90 degree. Full circle is 360, and so on. But where the 360 coming from? I’ve heard that some old civlization have this number system with base 60. And it would be practical to divide something to 360 pieces. Maybe its the same with hour, minutes and seconds too? i mean, a clock is usually a cicrcle with some number and two rotating needle.
And if ever have a scientific calculator, u know, in highschool, just do some assignment, look up the formula, and just plug in the number, and the result dont made sense, or even it just ouputtin error? turns out your calculator using radian. Which is another way of measuring angle.
