Предмет: Математика, автор: durak8090

Один из углов прямоугольного треугольника равен 20, 30, 45,найти второй острый угол

Ответы

Автор ответа: MynameSvetaSun
0

Решение:

Сумма углов в треугольника равна 180°, отсюда можно выразить величину второго острого угла:

180° - 90° - первый угол = 90° - первый угол

1. Один угол равен 20°, тогда второй угол равен 90° - 20° = 70°

2. Один угол равен 30°, тогда второй угол равен 90° - 30° = 60°

3. Один угол равен 45°, тогда второй угол равен 90° - 45° = 45°

Ответ: 70°; 60°; 45°

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