The number of values of \( x \) for which \( \sin 2 x+\cos 4 x=2 \)...

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The number of values of \( x \) for which \( \sin 2 x+\cos 4 x=2 \) is
(a) Zero
(b) 1
\( \mathrm{P} \)
(c) 2
(d) Infinite
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