[填空题]
Eclipses happen on Earth becau(dhm8v6 u zn2 ay*es*hse of an amazing coincidence.n 5iyo 7u3pkshhi1b26.rxl39l :qwpig pc 5t1 Calculate, using the information inside the Front 7 .p1h 9p5 husx6ow:pc5 2 bli3 ntgi1l3yqkirCover, the angular diameters (in radians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$