:
Below there is a drawing to scale representing one of the 4 seasons of the year on Earth. In this case, the drawing below represents December 2020. From the 10 formulas and properties you know from the Circle, provide:
1. No less than 5 calculations from this model but one must be to find DE' or MK, or the arc length of DE' or DE.
2. Each calculation should be using a different function or computing a different part of the circle.
3. Each calculation must be accurate/correct.