Предмет: Алгебра, автор: Аноним

arcsin12+arccos1−5⋅arctg(−3–√3)+arcctg0. помогите​

Приложения:

Ответы

Автор ответа: Akakakl
2

Ответ:

\frac{ 3}{2} \pi

arcsin \frac{1}{2} = \frac{\pi}{6} \\ arccos1 = 0 \\ arctg( - \frac{ \sqrt{3} }{3} ) = - \frac {\pi}{6} \\ arcctg0 = \frac{\pi}{2}

\frac{\pi}{6} + 0 + 5 \times \frac{\pi}{6} + \frac{\pi}{2} = \\ \frac{\pi}{6} + \frac{5\pi}{6} + \frac{3\pi}{6} = \frac{9\pi}{6} = \frac{3}{2} \pi

Будут вопросы по уточнению, пишите в комментарии

Предыдущий вопрос
Следующий вопрос
Похожие вопросы
Предмет: Английский язык, автор: yanapodosinnkon
РЕБЯИ СРОЧНОООООО
Circle the correct item.
1) You read this book. It’s very interesting.
a) must b) may c) should
2) He meet the delegation tomorrow morning.
a) may b) has to c) must
3) I take your pen for a moment?
a) Should b) Can c) Must
4) Frank ski at the age of ten.
a) could b) had to c) ought to
5) You respect your parents.
a) may b) must c) are able to
6) Sally phone me yesterday but she didn’t do it.
a) has to b) should c) had to
7) You go for a walk when you finish your homework.
a) have to b) may c) ought to
1 год назад
Предмет: Английский язык, автор: anutka9642
A. Read and correct.

e.g. Did you went to school? Go

1. My mum didn’t made a cake. ……….
2. What did you did last summer? ……….
3. I didn’t drove to work. ……….
4. Did you took my bag? ……….
5. People ride horses a long time ago. ………
6. Do you watch the game last night? ……….
7. I watch TV yesterday evening.
8. When did you began reading this book? ……….
9. I didn’t saw him last week. ……….
10. She didn’t knew about it. ……….
B. Choose the correct answer.
1. You ………. play computer games all day.
a) should;
b) shouldn't.
2. We ………. do our homework because it was very difficult.
a) could;
b) couldn't.
3. She ………. go to the party. She's ill.
a) can;
b) can't.
4. I ………. do my homework.
a) must;
b) mustn't.
5. He ………. wear a jacket. It's warm today.
a) has to;
b) doesn't have to.
6. They ………. go to bed. They're very tired.
a) should;
b) shouldn't.
7. You ………. be rude to people.
a) must;
b) mustn't.
8. We ………. go to school in the holidays.
a) have to;
b) don't have to.
9. Mark ………. feed the cat. His mum fed it this morning.
a) has to;
b) doesn't have to.
10. Katie ………. skateboard. She can ice skate, too.
a) can;
b) can't.
C. Choose the correct answer.
1. Have you heard the ………. of Little Red Riding Hood?
a) tail;
b) tale.
2. The children went ………. the shop.
a) too;
b) two;
c) to.
3. The man took his ………. fishing.
a) son;
b) sun.
4. It is fun to jump in the puddles when it ………. .
a) reigns;
b) rains.
5. I ………. you would pass your English exam.
a) new;
b) knew.
6. Please close the ………. when you leave.
a) gate;
b) gait.
7. When baking cookies, always use the correct amount of ………. .
a) flower;
b) flour.
8. When I grow up I would like to ………. a sports car.
a) by;
b) bye;
c) buy.
9. The man enjoyed riding his bike down the narrow ………. .
a) rode;
b) road.
10. You've finally completed the ………. quiz.
a) hole;
b) whole.
D. Complete the phone conversation. Use the words in the box.

Box office: Good afternoon. The Paramount Theatre. (1) ………. help you?
Bob: Hello. (2) ………. tell me what time Hamlet (3) ………. tonight?
Box office: (4) ………. . It's on (5) ………. o'clock.
Bob: Right. And could you also (6) ………. me (7) ………. the theatre restaurant (8) ………. ?
Box office: Yes, it opens at 6.30 and it (9) ………. eleven o'clock.
Bob: Great. (10) ………. .

a) at eight
b) Can I
c) Certainly
d) closes at
e) Could you
f) is on
g) opens
h) tell
i) Thank you very much
j) what time
1 год назад
Предмет: Английский язык, автор: Sona1111
Помогите плиз!!!!!!!
1 год назад
Предмет: Математика, автор: mrkvkaa
помогите от 5 примера до последнего)
7 лет назад
Предмет: Русский язык, автор: beloglathova
Какие предложения можно составить со словосочетанием ( Осенний листопад)


Заранее спасибо!
7 лет назад