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Use the Half-Angle Formula to Simplify the Given Expression $\sqrt { \frac { 1 + \cos 16 x } { 2 } }$

Question 44

Multiple Choice

Use the half-angle formula to simplify the given expression.
$\sqrt { \frac { 1 + \cos 16 x } { 2 } }$

A) $\cos 32 x$
B) $\cos 8 x$
C) $\cos 16 x$
D) $\cos 64 x$
E) $\cos 4 x$

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