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МатематикаВопрос:
1) In the given right-angled triangle, one angle is 70 degrees and the adjacent side to it is unknown. The opposite side to the 70-degree angle is also unknown. The right angle is at C. Find the missing angle at A.
Ответ:
Решение:
- В прямоугольном треугольнике сумма острых углов равна 90 градусов.
- Известен один острый угол - 70 градусов.
- Второй острый угол (угол А) равен: 90 - 70 = 20 градусов.
Ответ: 20°
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