Question Number 169138 by stelor last updated on 24/Apr/22
$${Hello},\:{please}\:{help}\:{me}. \\ $$$${calculate}\:{P}=\:\underset{{k}=\mathrm{0}} {\overset{{n}} {\prod}}{cos}\left(\theta{k}\right) \\ $$
Hello-please-help-me-calculate-P-k-0-n-cos-k-