Найдите тангенс угла BAC треугольника ABC,AC-6cм,CB-12 см

какие вопросы нужно задать,чтобы получить эти ответы. 1. This monument was put up three hundred years ago. 2. Only one of his books has been translated into Russian. 3. The meeting was put off, because the day wasn't convenient for most of the people. 4. Some pop singers were being interviewed when I switched on the telly. 5. These contests are held every four years. 6. Your order will be fulfilled in five days' time.

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