Science, Maths & Technology
Manufacturing
...system, which is to describe a circle as sweeping out a number of radians. You can think of a radian as being just like a degree, but rather than there being 360 of them in a circle, there are 2π of them. This may sound complicated, but it has the huge advantage that it makes the maths easier! Because the circumference is 2πr, and the wheel turns 2π radians in the same...