[填空题]
Eclipses happen on Earth because of a- dzat k1ff)s2,d mtp+7 ,tbpdn amazing x- 2/ /2c upgu5ifjbpicoincidence. Calculate, using the information inside the Front Cover, the angular diameters (infp/2xip bu 5 i/jc2ug- radians) of the Sun and the Moon, as seen on Earth.
Sun = $rad$ Moon = $rad$
