Changes

:<math>e^{i\phi} = \cos \phi + i\sin \phi \!</math>

:<math>e^{i\phi} = \cos \phi + i\sin \phi \!</math>

 

===Euler's Identity===

==Euler's Identity==

The formula can be used to derive an equation known as Euler's identity, which is sometimes considered one of most beautiful equations in mathematics:

The formula can be used to derive an equation known as Euler's identity, which is sometimes considered one of most beautiful equations in mathematics: