Ю.Корея. Экзамен за 9 кл. У вас 3 минуты! Старт.

Из точки A через узлы тетрадной сетки проведны лучи AB (верхний),AC, AK. Найти тангенс угла BAK.

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Ю.Корея. Экзамен за 9 кл. У вас 3 минуты! Старт.

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