
Multiply and Divide Complex Numbers in Polar Form
Authored by Anthony Clark
Mathematics
12th Grade
CCSS covered

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10 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Find the product z1z2 of the complex numbers z1 = 6 ( cos 125o+ i sin 125o )
z2 = 2 ( cos 55o + i sin 55o )
3 ( cos 70o+ i sin 70o )
12 ( cos 70o+ i sin 70o )
3 ( cos 180o+ i sin 180o )
12 ( cos 180o+ i sin 180o )
Tags
CCSS.HSN.CN.B.4
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Tags
CCSS.HSN.CN.B.4
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
Tags
CCSS.HSN.CN.B.4
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
3 ( cos 150o + i sin 150o )
10 ( cos 150o + i sin 150o )
3 ( cos 270o + i sin 270o )
10 ( cos 270o + i sin 270o )
Tags
CCSS.HSN.CN.B.4
5.
MULTIPLE SELECT QUESTION
1 min • 1 pt
If z = 2(cos(20o) + isin(20o)) and w = 3(cos(105o) + isin(105o)), find z / w. Choose all that apply.
2/3(cos(225o) + isin(225o))
2/3(cos(275o) + isin(275o))
3/2(cos(85o) + isin(85o))
6(cos(125o) + isin(125o))
Tags
CCSS.HSN.CN.B.4
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Find
5(cos 2π /3 + i sin 2π /3)⋅2( cos π /3 + i sin π /3)
in trig form. Then express your final answer in rectangular form.
-10
10
-10i
10i
Tags
CCSS.HSN.CN.B.4
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
POLAR FORM
RECTANGULAR FORM
Tags
CCSS.HSN.CN.B.4
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