Practice Exam Iii Trigonometry Worksheet With Answers Page 3
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7MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
The graph of a polar equation is given. Select the polar equation for the graph.
25)
25)
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1
1
r
r
-5 -4 -3 -2 -1
-5 -4 -3 -2 -1
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-1
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-2
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-3
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-4
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-5
-5
A) r = 2
B) r sin θ = 2
C) r = 4 cos θ
D) r = 4 sin θ
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26)
5
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r
r
-5 -4 -3 -2 -1
-5 -4 -3 -2 -1
1
1
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5
-1
-1
-2
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-3
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-5
-5
A) r = 6 cos θ
B) r = 6 sin θ
C) r = 3 + sin θ
D) r = 3 + cos θ
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
Find the absolute value of the complex number.
27) z = -10 + 14i
27)
28) z = 3 + 9i
28)
Write the complex number in polar form. Express the argument in radians.
29) 2 - 2i
29)
Write the complex number in polar form. Express the argument in degrees.
30) 4i
30)
Write the complex number in polar form. Express the argument in radians.
31) - 5 3 - 5i
31)
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