[填空题]
Eclipses happen on Earth f 69 xilmkgs-0because vl * j5x0xrovbp-jr (q631kwwof an amazing coincidence. Calculate, using the information inside the Front Cove wv wl610-(vxp xb5*ojrjkr3 qr, the angular diameters (in radians) of the Sun and the Moon, as seen on Earth. Sun = $rad$ Moon = $rad$