Solved

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

Question 5

Multiple Choice

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

A) $2 \cos ^ { 2 } 2 y$
B) $\cos ^ { 2 } 4 y$
C) $\cos ^ { 2 } 2 y$
D) $4 \cos ^ { 2 } 4 y$
E) $2 \cos ^ { 2 } 4 y$

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