Question Number 103984 by dw last updated on 18/Jul/20
$$\:\:\:\:\boldsymbol{{tan}}^{\mathrm{2}} \left(\boldsymbol{{x}}\right)+\boldsymbol{{tan}}^{\mathrm{2}} \left(\mathrm{2}\boldsymbol{{x}}\right)+\boldsymbol{{tan}}^{\mathrm{2}} \left(\mathrm{4}\boldsymbol{{x}}\right)=\mathrm{33} \\ $$$$\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\boldsymbol{{x}}=? \\ $$
Commented by behi83417@gmail.com last updated on 19/Jul/20
$$\mathrm{Nice}\:\mathrm{to}\:\mathrm{see}\:\mathrm{you}\:\mathrm{again}\:\mathrm{mr}\:\mathrm{proph}:\mathrm{MJS}. \\ $$