Question Number 29131 by $@ty@m last updated on 04/Feb/18
$${If}\:\mathrm{tan}^{\mathrm{2}} {a}\mathrm{tan}\:^{\mathrm{2}} {b}+\mathrm{tan}^{\mathrm{2}} {b}\mathrm{tan}\:^{\mathrm{2}} {c}+\mathrm{tan}^{\mathrm{2}} {c}\mathrm{tan}\:^{\mathrm{2}} {a} \\ $$$$+\mathrm{2tan}^{\mathrm{2}} {a}\mathrm{tan}^{\mathrm{2}} {b}\mathrm{tan}\:^{\mathrm{2}} {c}=\mathrm{1} \\ $$$${then}\:{find}\:{the}\:{value}\:{of}: \\ $$$$\mathrm{sin}\:^{\mathrm{2}} {a}+\mathrm{sin}\:^{\mathrm{2}} {b}+\mathrm{sin}\:^{\mathrm{2}} {c} \\ $$
Commented by $@ty@m last updated on 13/Feb/18
$${I}\:{have}\:{no}\:{answer} \\ $$
Commented by $@ty@m last updated on 13/Feb/18
$${Solution}\:{please}... \\ $$
Answered by Tinkutara last updated on 13/Feb/18
Commented by $@ty@m last updated on 13/Feb/18
$${Wonderful}!!! \\ $$$${Thanks}\:{a}\:{lot}! \\ $$