Euler’s formula is a fundamental relation between the exponential function and the trigonometric functions.
The exponential function relates to sine and cosine via
This can be interpreted as either a theorem (especially when is restricted to real numbers and have been defined independently of ), or as an implicit definition of (where more explicitly we have and ).
Named after Leonhard Euler.
Last revised on May 10, 2019 at 15:09:15. See the history of this page for a list of all contributions to it.