Modulus and Argument Flashcards
1
Q
Modulus: If s = a+bi then what is the modulus of s?
A
|s|= √(a^2 + b^2 )
2
Q
What is the modulus?
A
The length of the line from 0 to the complex number
3
Q
How to find the modulus
A
Use pythagoras to find the line from 0 to the complex number.
4
Q
The argument is measured in what?
A
Radians
5
Q
180 degrees is what in radians?
A
Pi
6
Q
90, 60, 45 and 30 degrees are what in radians
A
1/2π, 1/3π, 1/4π and 1/6π
7
Q
The argument starts from which axis?
A
The real axis
8
Q
The argument finds the shortest route so how do you get around this?
A
Take the answer away from 2π (360 degrees)
