Пусть дан равнобедренный треугольник АВС. По условию задачи, один из внешних углов равен 32 градуса. Тогда Внутренний угол С как смежный угол равен 180-32=148(градусов). Так как в равнобедренном треугольнике углы при основании равны, а сумма внутренни углов равна 180 градусов, то углы А и В равны (180-148)/2=16(градусов).
Рассмотрим треугольник ACD. Так как угол С - тупой, то высота, проведённая из вершины при основании (допустим АD),лежит вне треугольника. В полученном треугольнике АСD угол D прямой, угол ACD=32 градуса. Тогда угол СAD равен 180-(90+32)=58 градусов.Значит искомый угол ACD равен 58+16=74 градуса.
1) What is the greenhouse effect? Why is it dangerous?
The greenhouse effect is a process that occurs when gases in the Earth's atmosphere, such as carbon dioxide, trap the Sun's heat. This process makes our planet much warmer than it would be without an atmosphere. The problem is that human activities are changing the Earth's natural greenhouse effect. Burning fossil fuels like coal and oil puts more carbon dioxide into our atmosphere and the rising temperature on the planet can lead to ice melting and climate change.
2) What climate do people have in Vladivostok?
Vladivostok has a monsoon-influenced humid continental climate.
3) Why are rainforests so important to the life on the Earth?
Rainforests are often called the lungs of the planet because they absorb carbon dioxide, a greenhouse gas, and produce oxygen, which is necessary for our survival. Rainforests also stabilize climate and are home to a lot of plants and wildlife.
4) What are the most important environmental problems?
They are global warming, acid rain, air pollution, waste disposal, ozone layer depletion, water pollution, climate change.
How can the problem of water pollution be solved?
Wastewater must be carefully cleaned (treated). There should be strict fines (штрафы) for those who pollute water.
5) What can cause air pollution?
Air pollution is caused by solid and liquid particles (твердыми и жидкими частицами) and certain gases that are suspended in the air. These particles and gases come from car and truck exhaust, factories, dust, volcanoes and wildfires.