Evaluate the trigonometric function using its period as an aid.
?
cos 8?
?
A. cos 8? = -8
B. cos 8? = 0
C. cos 8? = 8
D. cos 8? = ?
E. cos 8? = 1
Answer: E
Mathematics
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A. 
B. 
C. 
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A. 2m + 2
B. 2m - 2 + 
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