# Complex Numbers (Conjugates, Division, Modulus)

Videos and lessons to help High School students know how to find the conjugate of a complex number; use conjugates to find moduli and quotients of complex numbers.

### Suggested Learning Targets

• I can use conjugates to divide complex numbers.
• I can find the moduli of complex numbers.

Common Core: HSN.CN.A.3

Related Topics:
Common Core (The Complex Number System)

Common Core for Mathematics

## Divide Complex Numbers

Dividing by Complex Numbers
This video explains how to divide one complex number by another.

Complex Numbers
Dividing complex numbers. Complex conjugates.

Complex Numbers: Dividing - Ex 1
This shows how to divide a complex number by another complex number.

Complex Numbers: Dividing - Ex 2
This shows how to divide a complex number by another complex number.

Complex Numbers: Dividing - Ex 3
This shows how to divide a complex number by another complex number.

## Modulus of a Complex Number

Absolute value of a complex number
Modulus of a complex number. Distance form the origin (0, 0)

Complex Numbers: Graphing and Finding the Modulus, Ex 1.
This video shows how to graph a complex number and how to find the modulus of a complex number.

Complex Numbers: Graphing and Finding the Modulus, Ex 2.
This video shows how to graph a complex number and how to find the modulus of a complex number.

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