Предмет: Алгебра, автор: Psihopatka1o7

помогите решить: sin*2п/3*cos*п/3*tg*п/4*ctg*2п/3 ​

Ответы

Автор ответа: planpeace
2

Ответ:

Объяснение:

√3/2 * 1/2 * 1 * (-√3/3) = -1/4

BroDuck: Доброго времени суток! Не могли бы помочь с заданием? Буду очень благодарен! Задание:
https://znanija.com/task/37762340?utm_source=android&utm_medium=share&utm_campaign=question
Автор ответа: Аноним
3

sin(2π/3)*cos(π/3)*tg(π/4)*ctg(2π/3)=

sin(π/3)*cos(π/3)*tg(π/4)*(-ctg(π/3))=

- (√3/2) * (1/2) * 1 * (√3/3)= -(√3*1*√3)/(2*2*3)=-1/4.

Psihopatka1o7: тебе спасибо большое
Предыдущий вопрос
Следующий вопрос
Интересные вопросы
Предмет: Английский язык, автор: Аноним
Ребятки,переведите пожалуйста своими словами(мне проверить свой перевод надо))):
I have been dreaming of going to Germany since I was a child
2 года назад
Предмет: Русский язык, автор: Антон2000000
Сделать орфоэпический разбор слова: лучше.
2 года назад
Предмет: Английский язык, автор: шон1
помогите перевести

BOOKWORM'S LOVE OF READING 
WINS HIM TOP AWARD

Thirteen-year-old Chun-To started with one or two books а week but in
the past nine months he has read 137 books — enough to win the Education
Department's Extensive English Reading Scheme award.

Не became the top student from 19 schools participating in the Scheme run by the Institute of Language in Education.

The Wong Shiu Chi Secondary School pupil suggested that he probably was
а kind of bookworm and that he had few other hobbies, though he did once
represent his primary school in а table tennis contest. But most
evenings he spent reading to try to improve his English.

“Every evening after my homework I set aside one to two hours reading
the story books. And when I had finished the ones I borrowed from school
I exchanged them with my schoolmates, sо I can read more,” he said.

Chun-To said his favourite books were science fiction, detective and
horror stories but most of the titles he read for the competition were
famous classics.

“At first I had tо read twice some of the books I found difficult,” he admitted.

The school will not allow students to borrow books over the summer
holidays but Chun-To said he hoped tо continue his reading next term.

But as for his future career, he was still undecided. “I want to work in
an office rather than labouring and I want to be able to use my mind,
but it's too early for me to decide what I might do,” he said.
2 года назад
Предмет: Математика, автор: oxanasirotinsk
сколько будет: икс квадрат минус 2икс
8 лет назад
Предмет: Биология, автор: yuliyaminsk
СРОЧНО!
Процесс фильтрации плазмы крови в почках человека происходит в:
1 извитых канальцах 1 порядка
2 почечном тельце
3 петле Генле
4 почечной лоханке
биология 9 класс
8 лет назад