
Argument and Modulus for Complex Numbers
Authored by Anthony Clark
Mathematics
12th Grade

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13 questions
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1.
FILL IN THE BLANK QUESTION
1 min • 1 pt
In the complex plane, the ____________ is the distance from the origin to the complex number point z.
2.
MULTIPLE CHOICE QUESTION
1 min • 2 pts
If 1-j what is the argument (angle) of z in degrees?
90 degrees
180 degrees
0 degrees
-45 degrees
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The modulus of 5 + 4i is
41
-41
√41
-√41
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
The _________________ is the radian or degree measure of the counter clockwise rotation of the vector representing complex number z.
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the modulus of (7 - i) / (3 - 4i)
21/2
2
0
1
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find the argument of (7 - i) / (3 - 4i)
45° , 270°
45° only
π / 4 , 3π / 2
π / 4 only
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