-
Помогите пожалуйста решить и объясните решение. Очень нужно!!!
Треугольник АВС
угол С равен 90 градусов
Синус А = корень из 3/(делённый) на 2
Найдите косинус А
Ответы 3
-
спасибо вам! Только скажите пожалуйста, по какой таблице?
-
Автор:
kira97 - 6 лет назад
-
0
-
-
Это таблица тригонометрических функций основных углов.
-
Автор:
natalyavipj - 6 лет назад
-
0
-
-
Если не ошибаюсь, то стр. 159 Атанесяна 7-9 классы
-
Автор:
jewelosi8 - 6 лет назад
-
0
-
-
Добавить свой ответ
Еще вопросы
-
Прочитай Выпиши местоимения укажи их лицо и число. Мы каждый день едим хлеб без хлеба Мы даже за стол не садимся разве без него можно наесться досыта Он дает людям силы для жизни и для работы хлеб это богатство народа
-
Предмет:
Русский язык -
Автор:
raulvd0z - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
сколько будет 92:2,68:17 примеры №26 3 класс
-
Предмет:
Математика -
Автор:
kirsten - 6 лет назад
-
Ответов:
1 -
Смотреть
-
-
из двух поселков, расстояние между которыми 22 км, навстречу друг другу вышли два пешехода. Первый из них вышел на 1 ч раньше второго. Они встретились через 2 ч после того как вышел второй пешеход, скорость которого на 1 км/ч больше скорости первого. Какова скорость второго пешехода
-
Предмет:
Математика -
Автор:
kitten50 - 6 лет назад
-
Ответов:
2 -
Смотреть
-
-
Срочно помогите с английским
1. The right hand ... for eating by most of people.
A) used; B) uses; C) is used; D) is being used.
2. Needless to say, hands ... before and after eating.
A) must wash; B) must be washing; C) wash; D) must be washed.
3. I haven’t got a large appetite and when I ... my favourite food, I leave half of it on the plate.
A) was given; B) gave; C) have given; D) am given.
4. Japan ... upof a chain of more than one thousand islands.
A) make; B) is made; C) is making; D) makes.
5. Do you know how many paintings ... by vandals?
A) are destroyed; B) are being destroyed; C) have been destroyed; D) are destroying.
6. A lot of jazz festivals ... every year in America.
A) are held; B) hold; C) are holding; D) held.
7. The famous actress ... now for the “HELLO” magazine.
A) is interview; B) interview; C) is being interviewed; D) was interviewed.
8. All tickets ... before we got in the theatre.
A) were sold; B) have sold; C) are sold; D) had been sold.
9. Students ... next Friday.
A) will be examined; B) will examine; C) are examined; D) have been examined.
10. The dinner ... by 5 o’clock tomorrow.
A) will be served; B) is served; C) will have been served; D) will serve.
11. “A Farewell to Arms” ... in 1929.
A) was published; B) were published; C) published; D) has published.
12. He ... to tidy the garage.
A) was helped; B) were helped; C) are helped; D) have helped.
13. She ... practicing the piano yesterday.
A) is heard; B) was heard; C) hear; D) hears.
14. The jam sandwiches ... with white bread.
A) made; B) makes; C) are made; D) is made.
15. The Loch Ness monster ... to exist.
A) are said; B) were said; C) is said; D) says.
16. About 50 people ... to the party yesterday.
A) were invited; B) invite; C) was invited; D) are invited.
17. Trained dogs ... by the police to find the drugs.
A) use; B) are using; C) used; D) are used.
18. The library ... this year.
A) builds; B) has been built; C) is building; D) was built.
19. I suddenky remembered that the book ... at home.
A) had been left; B) was left; C) had left; D) has been left.
20. The flat ... into before you arrived.
A) had moved; B) hadn’t been moved; C) isn’t moved; D) was moved.
21. The children ... to bed early yesterday.
A) had been put; B) put; C) are put; D) were put.
22. Many new houses ... in our street by next year.
A) will built; B) have built; C) are building; D) will have been built.
23. The questions ... by the teacher now.
A) are asked; B) are asking; C) are being asked; D) have been asked.
24. The novel “The Mother” by Gorky ... into many languages.
A) has been translated; B) has translated; C) had been translated; D) hasn’t translated.
25. A large gold cup ... to the athlete last year.
A) presented; B) was presented; C) is presented; D) presents.
26. A lot of conserts ... by amateur actors in this theatre.
A) was given; B) were given; C) gave; D) give.
27. Reports at the conference ... by all the students.
A) is made; B) made; C) were made; D) make.
28. The plan of work ... for four hours.
A) discussed; B) is discussed; C) have been discussed; D) has been discussed.
29. The plan of work ... by all the students at five tomorrow.
A) is discussing; B) will be discussed; C) is being discussed; D) will discuss.
30. An experiment ... next week on Monday.
A) will be made; B) will make; C) is made; D) is being made.-
Предмет:
Английский язык -
Автор:
jasiahf9o0 - 6 лет назад
-
Ответов:
0 -
Смотреть
-
Топ пользователей
-
Fedoseewa27
35934 -
Devilian
2792 -
Pikachu
2228 -
hobbesbowers
2116 -
kaylynnbarron676
1818 -
女fei
1240 -
yulia-kaplina
1158 -
Poinntt
946 -
Bars
930 -
Queenmagic18
770
How much to ban the user?
1 hour
1 day
100 years