It is very rare for me to get the opportunity to measure the Sun. The glare is usually too big. However at dawn the other week I was able to verify that the Sun subtends half a little finger at arm's length. That's half a degree or about 0.009 radians. Angle subtended in radians = diameter of Sun/distance to Sun. The Sun is 150 million km away so diameter of Sun comes out at 1.3 million km. That's big!
