Diameter of the sun in degree?

Answer 1

maybe this will help

In 1979, scientists Eddy and Boornazian cautiously announced that their studies of solar measurement records from Greenwich Observatory in England, and the US Naval Observatory in Washington, conclusively showed that the sun was shrinking. Its diameter was decreasing at a rate of almost six feet per hour.1

There were potentially astounding implications. The announcement by Eddy and Boornazian with respect to the age of the sun (and hence the solar system), along with the apparent conflict with previously held ideas about how the sun produces its heat and light, did not go unnoticed. A vigorous healthy debate among solar astronomers began.

After their own analyses of the Greenwich and Washington data, plus comparisons of solar eclipse records, and consideration of photographic and other relevant evidence, many colleagues agreed with Eddy and Boornazian but the consensus seemed to be that the shrinkage rate was less than half that initially suggested.

Answer 2

The diameter of the Sun is approximately 0.5 degrees when viewed from Earth. This measurement helps astronomers and skywatchers estimate sizes and distances in the sky.