Предмет: Геометрия, автор: delyagalimzyan

АЕ параллельна DC, AB=10, O-центр окружности, CD-касательная. Найдите ОС.

Приложения:

Ответы

Автор ответа: kirichekov

<A=<C накрест лежащие при параллельных прямых АЕ, CD и секущей АС
OD перпендикуляр DC
AB=10, =>AO=OB=R=5. OD =5
ΔAKOподобен ΔCDO
OK/OD=AO/CO
OC=25/4
OC=6,25

delyagalimzyan: Спасибо большое:)

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Английский язык, автор: ники2017

помогите Пожалуйста срочно нужно! ! !

1 год назад

Предмет: Русский язык, автор: dmitrijob

найти сочетания, которые не соответствуют литературной форме а)согласно соглашению б)согласно договоренностям в) согласно легенды г) согласно мнениям

1 год назад

Предмет: Английский язык, автор: Pozn0vatel

осень очень срочно
1. My mum ___ born in 1969.
1) will be
2) was
3) is
4) were
2. I ___ painting now.
1) was
2) are
3) am
4) were
3. We ___ students at the moment.
1) are
2) were
3) was
4) is
4. Who ___ singing now?
1) is
2) was
3) be
4) were
5. Look, there ___ my books on the desk.
1) is
2) was
3) were
4) are
6. Do you know these men? What ___ their
names?
1) are
2) were
3) was
4) will be
7. What ___ your favourite color?
1) were
2) are
3) is
4) am
8. How old ___ you?
1) are
2) is
3) was
4) were
9. ___ there letters in the box?
1) Are
2) Is
3) Was
4) Will be
10. There ___ many birds on the roof.
1) are
2) is
3) was
4) be
11. Many years ago there ___ many dinosaurs on
the Earth.
1) are
2) is
3) was
4) were
12. There ___ some lessons in English next
week.
1) are
2) is
3) will be
4) were
13. ___ there any lessons yesterday?
1) Are
2) Is
3) Were
4) Was
14. There ___ much snow this winter.
1) are
2) is
3) was
4) were
15. There ___ some interesting news today.
1) are
2) is
3) was
4) were
16. ___ there any food in our home?
1) Are
2) Is
3) Be
4) Were
17. William likes animals. He ___ a dog.
1) have got
2) has got
3) haven't got
4) hasn't got
18. We ___ many lessons every day.
1) have got
2) has got
3) had got
4) hasn't got
19. I am poor. I ___ much money.
1) have got
2) has got
3) haven't got
4) hasn't got
20. Mr. and Mrs. Hamburger ___ two children, a
boy and a girl.
1) have got
2) has got
3) haven't got
4) hasn't got
21. My friend is popular. He ___ many friends.
1) have got
2) has got
3) haven't got
4) hasn't got
22. I am tired. I ___ many problems.
1) have got
2) has got
3) haven't got
4) hasn't got
23. David Backham ___ much money.
1) have got
2) has got
3) haven't got
4) hasn't got
24.I met a hooligan.I___ a mobile phone now.
1) have got
2) has got
3) haven't got
4) hasn't got
25)It is a powerful computer.It ___ many functions

1 год назад

Предмет: Английский язык, автор: nasty0327

помогите пожалуйста:-)))

7 лет назад

Предмет: Другие предметы, автор: eroshami

Как называется фильм про отца писателя и его сына. Они живут на берегу пляжа, отец спит с соседкой, потому что его жена умерла. А его сын является фанатом Стивена Кинга и его любимая книга это "ОНО"

7 лет назад