Question

. From Irvine, we observe that the North Star (Polaris) is located at an elevation of roughly 33 degrees. We then quickly fly north 1600 kilometers to Seattle, where we observe Polaris to be at an elevation of 48 degrees. Recognizing that there are 360 degrees in a circle and a circle’s circumference is equal to π × its diameter, what is the approximate size (i.e. radius) of the Earth?

Answer 1

Radius of earth from elevation of north star at two places on earth