[填空题]
Eclipses happen on Earth n6wibh5lx5:k t s3su/because of an amazing coincidence. Calculfr,j o dwm02:nikxi4* ate, using the information inside the Front Cover, the angular diameters (in radians) of the Sun andmk2w, i:ri40x*ojd nf the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$
Post time 2025-2-18 20:00:22
