Question Number 129061 by behi83417@gmail.com last updated on 12/Jan/21
Commented by mr W last updated on 12/Jan/21
$${is}\:{it}\:{not}\:{obvious}\:{that}\:{the}\:{maximal} \\ $$$${equilateral}\:{has}\:{the}\:{side}\:{length}\: \\ $$$$\mathrm{1}/\mathrm{cos}\:\mathrm{15}°=\sqrt{\mathrm{6}}−\sqrt{\mathrm{2}}? \\ $$
Commented by behi83417@gmail.com last updated on 12/Jan/21
Commented by behi83417@gmail.com last updated on 12/Jan/21
Commented by behi83417@gmail.com last updated on 12/Jan/21
$$\mathrm{thanks}\:\mathrm{in}\:\mathrm{advance}\:\mathrm{dear}\:\mathrm{master}. \\ $$$$\mathrm{yes}.\mathrm{it}\:\mathrm{is}\:\mathrm{right}. \\ $$