Mathematics, 22.03.2021 15:20, rleiphart1

Help, Help, Please $\sf find \: the \: value \: of \: \theta \: when \: \theta \: is \: acute\: angle$

$\sf \cos^{2}(\theta) - \sin^{2}(\theta) =2-5 \cos(\theta)$
$\text{note:explanation is a must}$

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