de MOIVRE's THEOREM

de Moivre’s theorem is a most beautiful result of complex analysis involving powers of ‘e to the i x n x pi’ where one gets a lot of trigonometric identities from this simple theorem in a straightforward way, Ezra showed me the formula one day and I learned it in a 400 level math course in ‘complex analysis’ taught by some guy I do not remember his name now...MJB