Предмет: Геометрия, автор: aigeke2000

какой угол образуют стрелки часов в 12 часов 35 минут (если считать по напрвлению от часовой к минутной стрелке)ответ:95 105 100 115 можно с доказательством заранее спасибо

Ответы

Автор ответа: CallMeMaybe

итак имеем

12 часов и 360 градусов

следовательно на 1 час(или на 5 минут) 30 градусов

12:35 это 7*30=210 градусов

я считаю,что ответы неправильные,

Автор ответа: доминатор

1 час или 5 мин это 360/12=30 градусов

7*30=210 градусов но из них нужно вычесть угол на который ушла часовая стрелка от цифры 12.минутная стрелка делая оборот сдвигает часовую на 30 градусов, то есть каждыё 5 мин это 2,5 градуса часовой стрелки итого 2,5*7=17,5 градусов

210-17,5=192,5 градусов - угол между часовой и минутной

правильного ответа в вариантах нет.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: juliaMarinatas

Помогите перевести на русский, пожалуйста. Только не через переводчик, пожалуйста.
1. For Indira and her classmates, the journey to school just got a lot hander. The Indonesian schoolgirl lives on one side of the Ciberang River but her school is on the other side — and the river has been flooding.
On Monday, the rising waters broke a pillar supporting a suspension bridge that the children usually use. There is another bridge, but it is too far away and the kids don't want to be late for school. Indiana Jones himself would find it too risky, but children don't seem to worry — the most important thing for them is to be at school on time!
2. Every morning before dawn, more than 50 children from Xinmin village in China get up at 5 a.m. and head for school eight kilometers away. To get to school they have to cross three mountains. As they start very early and it is still dark they take flashlights with them. There are some dangerous parts of the road, and when the children come to these, the younger ones have to hold onto the older children's hands. Two hours later, they arrive at school and begin their day.
3. Going to school in China is no joke. Nearly 500 children from one of the village cross the most dangerous part of the Nujiang River every day. There is no bridge over the river. Instead there is a steel cable over it. The children fasten themselves to the cable with a metal carabiner and a rope and slide across the 200-metre-wide canyon.
Mei, 5 years old, who was once stuck in the middle of the cable for nearly 20 minutes, told reporters, 'I used to dream of having a bridge, but then I learned that my dream was too expensive.'
However, officials have finally agreed to spend 35,000 on a bridge after a TV programme was made about the children's dangerous daily journey.

2 года назад

Предмет: Қазақ тiлi, автор: Аноним

сочинение поздравления маме на тему наурыз

2 года назад

Предмет: Русский язык, автор: ПOMOГИTE2