Complex Number Addition
Math: Precalculus: Applications of Trigonometry
9-12
45 Minutes
TI-Nspire™ CX
TI-Nspire™ CX CAS
TI-Nspire™ CX CAS
TI-Nspire™ CX series
TI-Nspire™ CX CAS/CX II CAS
5.0
Lessons
TNS
Complex Number Addition
Activity Overview
This lesson involves the addition of two complex numbers.
Objectives
- Students will compute the sum of two complex numbers.
- Students will visualize and geometrically describe the sum of two complex numbers.
- Students will compute the absolute value and use trigonometry to find the argument of complex numbers.
- Students will compare the absolute values and arguments of two complex numbers to the absolute value and argument of their sum.
Vocabulary
- complex number
- position vector
- absolute value or magnitude of a complex number
- argument of a complex number
About the Lesson
This lesson involves the addition of two complex numbers.
As a result, students will:
- Compute the sum of specific complex numbers, make a general statement to describe this sum, and characterize the sum geometrically.
- Compute the absolute value and argument of complex numbers.
- Investigate and analyze the sum of two complex numbers with point representations that lie on the same line.

Download Files
Math: Precalculus: Applications of Trigonometry
9-12
45 Minutes
TI-Nspire™ CX
TI-Nspire™ CX CAS
TI-Nspire™ CX CAS
TI-Nspire™ CX series
TI-Nspire™ CX CAS/CX II CAS
5.0
Lessons
TNS
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