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Mathematics, 02.02.2021 02:00 natkookie85

Cos 2 * (x/2) = (sec(x) + 1)/(2sec(x))


Cos 2 * (x/2) = (sec(x) + 1)/(2sec(x))

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Cos 2 * (x/2) = (sec(x) + 1)/(2sec(x))
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