Representing complex numbers
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Mathematics
9th - 12th Grade
CCSS covered
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20 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
r [ ncos(θ) + i nsin(θ) ]
r [ cos(nθ) + i sin(nθ) ]
rn [ cos(nθ) + i sin(nθ) ]
rn [ cos(θn) + i sin(θn) ]
Tags
CCSS.HSN.CN.B.4
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calculate the modulus (R) and argument (θ) for z = 3 - 7i
R = √58, θ = 66.8°
R = 7.6, θ = 246.8°
R = √58, θ = 293.2°
R = 7.6 , θ = 113.2 °
Tags
CCSS.HSN.CN.B.4
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How do you write an ordered pair?
Tags
CCSS.HSN.CN.B.4
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Find the polar coordinates of the rectangular point. (0,3)
Tags
CCSS.HSN.CN.B.4
5.
MULTIPLE SELECT QUESTION
5 mins • 1 pt
If z = 2(cos(20) + isin(20)) and w = 3(cos(105) + isin(105)), find z / w. Choose all that apply.
2/3(cos(-85) + isin(-85))
2/3(cos(275) + isin(275))
3/2(cos(85) + isin(85))
6(cos(125) + isin(125))
Tags
CCSS.HSN.CN.B.4
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Write the rectangular equation x2 + y2 = 9 in polar form.
r = 3 or r = -3
r = 9 or r = -9
r = 6 or r = -6
r = 18 or r = -18
Tags
CCSS.HSN.CN.B.4
7.
MULTIPLE SELECT QUESTION
15 mins • 1 pt
A coordinate system is right handed if
its orientation equals 1
its orientation equals -1
counter clockwise ( 0 < θ < π )
clockwise ( 0 < θ < π )
Tags
CCSS.HSN.CN.B.4
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