Exam 8: Complex Numbers and Polar Coordinates
Exam 1: The Six Trigonometric Functions158 Questions
Exam 2: Right Triangle Trigonometry181 Questions
Exam 3: Radian Measure157 Questions
Exam 4: Graphing and Inverse Functions156 Questions
Exam 5: Identities and Formulas186 Questions
Exam 6: Equations134 Questions
Exam 7: Triangles225 Questions
Exam 8: Complex Numbers and Polar Coordinates177 Questions
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Convert to polar coordinates with
and
between
and
(-21, 12
)
(Multiple Choice)
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Find three cube roots for the complex number. Leave your answers in trigonometric form.
(Multiple Choice)
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Convert complex numbers to trigonometric form and then simplify the expression. Write the answer in standard form.
(Multiple Choice)
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Find three cube roots for the complex number. Leave your answers in trigonometric form. 
(Essay)
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Write the complex number in trigonometric form. Round the angle to the nearest hundredth of a degree. 
(Essay)
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DeMoivre's Theorem can be used to find reciprocals of complex numbers. Recall from algebra that the reciprocal of x is
, which can be expressed as
Use this fact, along with DeMoivre's Theorem, to find the reciprocal of the number below.
(Multiple Choice)
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Use your graphing calculator in polar mode to generate solutions for the equation using values of θ that are multiples of 15°. Sketch the graph of the equation using the values from your table.
(Multiple Choice)
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Solve the equation. Leave your solution in trigonometric form.
(Multiple Choice)
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Write the complex number in trigonometric form. Begin by sketching the graph to help find the argument θ . 
(Essay)
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Use DeMoivre's Theorem to find the following. Write your answer in standard form.
(Multiple Choice)
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Write the complex number in trigonometric form. Round the angle to the nearest hundredth of a degree.
(Multiple Choice)
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Solve the equation. Leave your solution in trigonometric form.
(Multiple Choice)
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Convert to polar coordinates. Use a calculator to find
to the nearest tenth of a degree. Keep r positive and
between
and
(Multiple Choice)
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Use DeMoivre's Theorem to find the following. Write your answer in standard form.
(Multiple Choice)
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