# Solve the equation cos 2x=0

Solve the equation $\mathrm{cos}2x=0$
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Krista Leon
$\mathrm{cos}2x=0$
$2x=\frac{\pi }{2}+\pi n,n\in Z$
$x=\frac{\pi }{4}+\frac{\pi n}{2},n\in Z$