Summary of Chapter 3 | Complex Number | Finding Reference Angle for Argument | June 2017

The idea of reference angle is being used both in chapter 2 and chapter 3. 

In Chapter 3, complex number, we will use the reference angle,α to find the argument,θ of a complex number by using

Importantly, the characteristics of reference angle,α are as below

1. It less than 90 degree
2. It is always positive
3. and Do Not bring negative sign of y and/or x during calculation to obtain reference angle.

Summary of Chapter 3 | Complex Number | Find Reference Angle for Argument | June 2017 is as below.