8.3:  De Moivre's Theorem

How to plot complex numbers in the complex plane

 


Finding the absolute value (modulus) of a complex number

 


 Introduction to converting between polar (trig) form and standard (rectangular) form

 


Converting from standard (rectangular) form to polar (trig) form

 


Converting from polar (trig) form to standard (rectangular) form

 


Multiplying and Dividing complex numbers in trig (polar) form

 


DeMoivre's Theorem for powers

 


DeMoivre's Theorem for nth roots of a complex number

 

This video shows how to find the three cube roots of the complex number i.


WHY the formula for multiplication of complex numbers in trig form works