About the radar incidence angle for extracting sentinel-1 data using SNAP

Hello everyone, I want to use SNAP to export the SLC data of sentinel-1 radar incidence angle of each pixel, I first encountered the following problems: 1, I can use Band Math to export the incident angle of each IW to the new Band, but the problem is that the extracted data has no latitude and longitude information, only angle information, how to extract the angle information when extracting the angle information can also extract the latitude and longitude information. 2, because it is SLC data, how can I merge the 3 IW angle information together everywhere? This is the problem I have now, do you have any good solutions? Thank you very much.

Is the product terrain corrected?