[填空题]
Eclipses happen on Earisb ilm, :6ufa+a62:d afx4 arth because of an amazing :xsx 6q8yqf3(t3ze ijbal8u*coincidence. Calculate, using the information inside the Front Cover, the angular diameters (in radians) of the Sun and the Moon, as seen on a8 yfzlbqj *8(x63ietq s3x :uEarth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
