[填空题]
Eclipses happen on Earoe)nf c, e 0,adwftnu(:+m,c gth because of an az4bi h9rn, n1tmazing coincidence. Calculate, using the information inside the Front Cover, ,4bi9 zrhn1 ntthe angular diameters (in radians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
