The ceremony was attended by the state Chief Minister J. Jayalalitha, her Cabinet colleagues and other dignitaries.
Seventy-eight-year-old Rosaiah, a veteran Congress leader of Andhra Pradesh, brings with him a vast political and Ministerial experience.
Mr. Rosaiah became Chief Minister of Andhra Pradesh following the death of Y.S. Rajasekhara Reddy in a helicopter crash. He quit the top post on health grounds paving the way for incumbent Kiran Kumar Reddy.