# 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,*Î±*to find the argument,

*Î¸*of a complex number by using

Importantly, the characteristics of reference angle,

*Î±*are as below- It less than 90 degree
- It is always positive
- and Do Not bring negative sign of
*y*and/or*x*during calculation to obtain reference angle.

## Post a Comment