Polar Form of Complex Numbers

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Mathematics
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9th - 10th Grade
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are the Cartesian coordinates used to represent a complex number on the Argand plane?
Cartesian coordinates
Cylindrical coordinates
Spherical coordinates
Polar coordinates
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the modulus of a complex number determined?
By adding the real and imaginary parts
By multiplying the real and imaginary parts
By subtracting the imaginary part from the real part
By taking the square root of the sum of the squares of the real and imaginary parts
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the range of values that the argument of a complex number can take?
0 to 2π
-π to π
-2π to 2π
0 to π
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which quadrant is the argument of a complex number equal to π minus the acute angle?
Third quadrant
Fourth quadrant
Second quadrant
First quadrant
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the polar form of a complex number in the first quadrant?
r(cos(θ) + i sin(θ))
r(cos(π - θ) + i sin(π - θ))
r(cos(θ) - i sin(θ))
r(-cos(θ) + i sin(θ))
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you convert a complex number from polar to Cartesian form?
Use the formula x = r sec(θ), y = r csc(θ)
Use the formula x = r tan(θ), y = r cot(θ)
Use the formula x = r cos(θ), y = r sin(θ)
Use the formula x = r sin(θ), y = r cos(θ)
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the argument of a complex number lying on the positive imaginary axis?
-π/2
π/2
π
0
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