Solve for the angle ?, where 0 ? ? ? 2?cos2? = 
A. ? = 
, 
, 
, 
B. ? = 
, 
, 
, 
C. ? = 0, ?, 2?
D. ? = 
, 
, 
, 
Answer: D
Mathematics
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A. 3
B. 
C. 
D. 9
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A. Yes B. No
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Divide.
A. - 
+ 
i
B. 
- 
i
C. 
+ 
i
D. - 
+ 
i
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Find the absolute value.|-21.1|
A. -21.1 B. 42.2 C. 0 D. 21.1
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