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Whithoutme
@Whithoutme
August 2022
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tg50градусов*tg10градусов*tg110градусов=?
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sedinalana
Tg50=tg(60-10)
tg110=tg(180-70)=-tg70=-tg(60+10)
получили
-tg(60+10)*tg10*tg(60-10)=-tg30=-√3/3
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Answers & Comments
tg110=tg(180-70)=-tg70=-tg(60+10)
получили
-tg(60+10)*tg10*tg(60-10)=-tg30=-√3/3