Question Number 153009 by SANOGO last updated on 04/Sep/21
$${montrer}\:{que}: \\ $$$$\mathrm{2}{cos}\frac{\pi}{\mathrm{2}^{{n}} }=\sqrt{\mathrm{2}\:+\sqrt{\mathrm{2}+…+\sqrt{\mathrm{2}}}} \\ $$$$ \\ $$
Commented by mr W last updated on 04/Sep/21
$${please}\:{make}\:{your}\:{posts}\:{better}\:{readable}! \\ $$$${try}\:{to}\:{set}\:{the}\:{defaut}\:{font}\:{size}\:\mathrm{20}. \\ $$$${try}\:{to}\:{avoid}\:{using}\:{extremly}\:{large}\:{or} \\ $$$${extremly}\:{small}\:{fonts}! \\ $$
Commented by SANOGO last updated on 04/Sep/21
$${ok}\:{thank}\:{you}\:{i}\:{understood} \\ $$
Answered by puissant last updated on 04/Sep/21