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raspberrieslight
@raspberrieslight
August 2021
1
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объясните мне пожалуйста эти тангенсы ((((
найдите значение выражения -50tg9' * tg81' + 31
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Verified answer
Tg9' = tg(90' - 81') = ctg81'
ctg81' * tg81' = 1
-50+31 = -19
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Answers & Comments
Verified answer
Tg9' = tg(90' - 81') = ctg81'ctg81' * tg81' = 1
-50+31 = -19