
Complex Numbers in Trigonometric Form

Interactive Video
•
Mathematics
•
9th - 12th Grade
•
Hard
+1
Standards-aligned

Jackson Turner
FREE Resource
Standards-aligned
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the first step in multiplying two complex numbers in trigonometric form?
Subtract the angles
Multiply the magnitudes
Divide the magnitudes
Add the angles
Tags
CCSS.HSN.CN.B.4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which identity is used to simplify the product of two complex numbers in trigonometric form?
Tangent identity
Double angle identity
Cosine and sine sum identities
Pythagorean identity
Tags
CCSS.HSN.CN.B.4
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the example, what is the result of multiplying 2 and 3 in the trigonometric form?
5
6
8
9
Tags
CCSS.HSN.CN.B.4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the reference angle used in the multiplication example?
45 degrees
60 degrees
90 degrees
30 degrees
Tags
CCSS.HSN.CN.B.4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the key step in deriving the formula for dividing complex numbers in trigonometric form?
Using the Pythagorean identity
Multiplying by the conjugate of the denominator
Adding the angles
Subtracting the angles
Tags
CCSS.HSN.CN.A.3
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the denominator when multiplying by the conjugate in the division of complex numbers?
It becomes zero
It doubles
It halves
It becomes one
Tags
CCSS.3.OA.B.6
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the division example, what is the result of dividing 24 by 6?
2
3
5
4
Tags
CCSS.7.EE.B.3
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