Предмет: Геометрия, автор: elizavetta97

в треугольнике абс аб бс ас 15 сн высота ан 3 корень из 21 найти синус угла асб


помогоите пожалуйста)))


Ответы

Автор ответа: kovalenina
0
sinACB=sinACH = frac{AH}{AC} = frac{3 sqrt{21} }{15} = frac{ sqrt{21} }{5}
Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Русский язык, автор: annaivanuk200710
ПОЖАЛУЙСТА БЫСТРЕЕЕЕЕЕЕЕЕЕЕЕ И СРОЧНО НУЖНО СПИСАТЬ ТЕКСТ УБИРАЯ СКОБКИ (СЛИТНО И РАЗДЕЛЬНО) БЫСТРЕЕ​
6 лет назад
Предмет: Английский язык, автор: Астали16
даю сто баллов пожалуйста помогите это очень важно

1. It is useful for me _____ tomorrow.
a to have met
b to be meeting
c to be met
2. My friend bought me a dictionary _____ the paper.
a to revise for
b to be revised for
c to have revised for
3. She does not seem _____ German and Spanish.
a to have been learnt
b to be learnt
c to have learnt
4. Let Mark _____ to the swimming pool.
a go
b to be going
c to have gone
5. My friends are happy _____ journals every day.
a to be given
b to have given
c to be giving
6. They waited for the article _____.
a to translate
b to be translating
c to be translated
7. She doesn’t suppose him _____ so many mistakes yesterday.
a to be making
b to have made
c to make
8. Philosophy is _____ philosophical notions.
a to be studying
b to study
c to have studied
9. The invention of computer can _____ at the lessons of foreign languages.
a to use
b to be used
c be used
10. Searching for new data helps students _____ in foreign languages.
a to do well
b to be done well
c do well
11. My mother wants me _____ today.
a to have been gone
b to be going
c to go to the library
12. Have you ever seen her _____ disco.
a dance
b to be dancing
c to dance
13. I suppose her _____ my advice.
a to have been followed
b to be followed
c to have followed
14. My mother made me _____ the sandwich.
a eat
b to be eating
c to have eaten
15. My parents are glad _____ journals every day.
a to be brought
b to have been bringing
c to be bringing
16. They seem _____ in that room now.
a to sleep
b to have slept
c to be sleeping
17. She doesn`t seem _____ the law last year.
a to be breaking
b to have broken
c to break
18. Papers happen _____ every day.
a to be translating
b to be translated
c to have translated
19. They are likely _____ dictionaries during the test.
a to have used
b to be used
c to use
20. My sister is sure _____ in touch with Liza.
a to have been kept
b to be kept
c to keep
6 лет назад
Предмет: Математика, автор: ademisaryeva
помогите с математикой ​
6 лет назад
Предмет: Математика, автор: Dinankkkkk

в куске было 10 целых 3 четвертых м материи . израсходовали на платья 8 целых 1 вторая м . сколько метров материи осталось в куске?
9 лет назад
Предмет: Обществознание, автор: 111Даша111

Пожалуйста напишите короткое сообщение об А.С.Пушкине
9 лет назад