Предмет: Математика, автор: Незнакомка438

Прямая AB перпендикулярна прямой CD. Найдите градусную меру углов EOB,EOC (рис.6.23)

Приложения:

Ответы

Автор ответа: dasha186

угол FOA = 180 - FOB = 180 - 150 = 30(градусов)

угол EOB = углу FOA = 30 (как вертикакльные)

угол EOC = 90 - 30 = 60(градусов)

Ответ: угол EOB = 30(градусов) ; угол EOC = 60(градусов)

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: Hogsterr1

Open the brackets and put the verbs in present simple

6 лет назад

Предмет: Английский язык, автор: pencak1103

поможіть!!!!!!!!!!!!!!!!!!!!!!!

6 лет назад

Предмет: Английский язык, автор: Lianey758

Put the adjectives in brackets into the correct form.

1. Ron was very rude to Mary. I think that……….(little) he could do is apologise to her.
2. A: Nick was……….(fast) runner in the race, wasn’t he?
B: That is right. No one else could beat him.
3. According to an English saying, the……….(old) we grow, the cleverer we become.
4. My sister is……….(sociable) person in our family.
5. I think that this book is……….(good) than that one.

Put the verbs in brackets into the past simple or the past continuous.

1. Sally……….(water) the garden while Paul was cleaning out the garage.
2. What time……….(you \ take) the dog for a walk this morning?
3. A: I……….(not \ know) you had a dog.
B: I……….(find) it on the street a month ago while I……….(come) back from school.
4. We……….(not \ meet) Clare and Tim for coffee yesterday, because I was too busy.
5. A: Where……….(you \ meet) Jason?
B: I…………(do) my shopping when he……….(enter) the shop.
6. Chris didn’t hear the phone ring because he……….(listen) to music very loudly at that moment.

Choose the correct item.

1. The concert is starting \ starts at nine o’clock. Do you want to dinner before that?
2. I am thinking \ think of buying a new camera.
3. We already visited \ have already visited The Tower of London.
4. A: Where are you going?
B: I am going shopping.
A: Oh, that’s nice I am going \ will go with you.
5. Jane works \ has worked at the restaurant every Friday evening.

6 лет назад

Предмет: Математика, автор: VOVAWEK8

На двух полках стояло по 15 книг. С одной полки взяли несколько книг, а с другой взяли столько книг, сколько осталось на первой полке. Сколько всего взяли книг?

9 лет назад

Предмет: Математика, автор: filfilatova

966/(x+17)=23 решить уравнение

9 лет назад