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Leon2014
@Leon2014
September 2021
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(tg(180°-a)cos(180°-a)tg(90°-a))/(sin(90°+a)ctg(90°+a)tg(90°+a))
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nKrynka
Решение
(tg(180°-a)cos(180°-a)tg(90°-a))/(sin(90°+a)ctg(90°+a)tg(90°+a)) =
= [- tgα * (- cosα) * ctgα] / [ cosα * (- tgα) * (- ctgα)] = 1
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Answers & Comments
(tg(180°-a)cos(180°-a)tg(90°-a))/(sin(90°+a)ctg(90°+a)tg(90°+a)) =
= [- tgα * (- cosα) * ctgα] / [ cosα * (- tgα) * (- ctgα)] = 1