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Синус острого угла в пять раз больше его косинуса. Чему равен котангенс данного угла?

Ученик221603 Ученик221603    3   17.04.2019 05:10    1

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aydawgva aydawgva  17.04.2019 05:10

решение задания по геометрии
 Синус острого угла в пять раз больше его косинуса.

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