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МатематикаВопрос:
The sum of the acute angles of a right-angled triangle is 90 degrees. A. True B. False
Ответ:
Обоснование:
Это утверждение верно. В прямоугольном треугольнике один угол равен 90 градусов. Так как сумма всех углов треугольника равна 180 градусов, то сумма двух оставшихся (острых) углов составляет $$180^\text{o} - 90^\text{o} = 90^\text{o}$$.
Ответ: A. True
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