I am doing some minor drywall repairs throughout my home and am uncertain how to properly finish the inside corners of the drywall returns. After 45 years in quake country, these joints are cracked in every window. In the attached image, I have scraped away loose joint compound to reveal the corner bead. To prevent re-cracking for as long as possible, would it be best to tape this joint, caulk it, or simply recoat with mud and pray?
Thanks for your time!