Multiple Choice
Use a graphing utility to determine which of the trigonometric functions is equal to the following expression. 
A) y = cos x
2
- 2π 
2 π 
- 2
B) y = sin x
2
- 2π 
2π 
- 2
C) y = csc x
4
- 2π 
2π 
- 4
D) y = cot x
4
- 2π 
2π 
- 4
E) y = tan x
4
- 2π 
2π 
- 4
Correct Answer:

Verified
Correct Answer:
Verified
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