Question 873816
1. What is the period of the function?
 y = 4 cos pi x 
Period = (2pi)/pi = 2
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A. 1
 B. 2
 C. pi
 D. 2pi
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2. Which represents the reference angle for 2pi/3?
Ans: pi/3
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A. 2pi/3
 B. pi/3
 C. pi/4
 D. pi/
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Cheers,
Stan H.
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