[填空题]
Eclipses happen on Earth because of an ama241 olx:paw /2h: yhemc6ixbszing coincidence. Calculate, using t 37 z1yfj6j xjxny7qlm1a ;vo(he information inside the Front Cover, the angular diameters jq (yaf;o3l1nzy67jxv1m j7 x(in radians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$