Question Number 171479 by som(math1967) last updated on 16/Jun/22
$$\:\boldsymbol{{tan}}^{\mathrm{2}} \frac{\boldsymbol{\pi}}{\mathrm{7}}\:+\boldsymbol{{tan}}^{\mathrm{2}} \frac{\mathrm{3}\boldsymbol{\pi}}{\mathrm{7}}\:+\boldsymbol{{tan}}^{\mathrm{2}} \frac{\mathrm{5}\boldsymbol{\pi}}{\mathrm{7}}=? \\ $$
Commented by som(math1967) last updated on 16/Jun/22
$$\boldsymbol{{re}}\:\boldsymbol{{post}}\:\boldsymbol{{of}}\:\:\boldsymbol{{qno}}.\mathrm{171389} \\ $$
Commented by greougoury555 last updated on 16/Jun/22
Commented by som(math1967) last updated on 16/Jun/22
$$\boldsymbol{{thank}}\:\boldsymbol{{you}} \\ $$
Commented by Tawa11 last updated on 16/Jun/22
$$\mathrm{Great}\:\mathrm{sir} \\ $$
Commented by SLVR last updated on 16/Jun/22
$${nice}\:{sir} \\ $$
Answered by som(math1967) last updated on 16/Jun/22
Commented by som(math1967) last updated on 16/Jun/22
$$\boldsymbol{{if}}\:\boldsymbol{{any}}\:\boldsymbol{{other}}\:\boldsymbol{{easy}}\:\boldsymbol{{way}}\:\boldsymbol{{please}} \\ $$$$\boldsymbol{{post}} \\ $$