JessicaMabs9045 JessicaMabs9045 12-03-2024 Mathematics contestada If n is an integer then show that if n is an integer then show that 1 + cos if n is an integer then show that 1 + cos theta + sin theta power n + 1 + cos theta minus sin theta power n is equal to N + 1 cos n of theta by 2 cos tan theta by 2