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stas020199
@stas020199
October 2021
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Помогите пожалуйста решить !У меня ответ получился -ctga!там где ///// это дробная черта![tex]cos(a+ \pi /2)*tg(\pi -a)/////cos(a- \pi )
[/tex]
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nKrynka
Решение
[cos(α+π/2) * tg(π-α)] / cos(α-π) = [- sinα * (-tgα)] / (-cosπ) =
= - tgα * tgα = - tg²α
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Thanks 1
stas020199
√32-√128×sin²7π/8а тут как с этим?Помогите пожалуйста!у меня ответ 4.
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Answers & Comments
[cos(α+π/2) * tg(π-α)] / cos(α-π) = [- sinα * (-tgα)] / (-cosπ) =
= - tgα * tgα = - tg²α