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Convert the Expression 1+cos4y1 + \cos 4 y A) 2cos22y2 \cos ^ { 2 } 2 y

Question 248

Multiple Choice

Convert the expression.
1+cos4y1 + \cos 4 y


A) 2cos22y2 \cos ^ { 2 } 2 y
B) cos24y\cos ^ { 2 } 4 y
C) cos22y\cos ^ { 2 } 2 y
D) 4cos24y4 \cos ^ { 2 } 4 y
E) 2cos24y2 \cos ^ { 2 } 4 y

Correct Answer:

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