[填空题]
Eclipses happen on Earg-+ y b*dumsf7f epf)yk(kmx- k0pf 4k/m ;v )q1lhs6oth because of an amazing coincidence. Calculate, using the information inside the Front Covk;)k6 pmks v 1(-qklfy4ex mfof0hp )/er, the angular diameters (in radians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$