Предмет: Алгебра, автор: Аноним

tg альфа= 1/2 , tg 2альфа= ?

Ответы

Автор ответа: NikaZ26

вот это формула тангенса двойного угла

Приложения:

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Русский язык, автор: Аноним

В каком предложении нет грамматической ошибки? Выберите правильный ответ:
Одному из героев романа, ищущим смысл жизни, открывается путь к внутренней свободе.
Мне не забыть этой волнующей до глубины души встречи.
Приведенные факты в докладе свидетельствуют о больших успехах нашей медицинской науки.

1 год назад

Предмет: Русский язык, автор: Shota69

69. Прочитайте стихотворение Н. Рубцова «Медведь». Выделите слова,
образующие текстовую тематическую группу. Вставьте пропущенные бук
вы. Какое правило русской орфографии необходимо вспомнить?

В м..дведя выстрелил л..сник. Застряла дробь в л..хматом теле. М..гучий зверь к сосне приник. Глаза м..дведя слез полны:

За что убить его х..тели? Домой отправился м..дведь,

М..дведь не чувствовал в..ны! Чтоб горько дома пор..веть...

1 год назад

Предмет: Английский язык, автор: jerseyjack

ХЕЛП! заранее спасибо
Ex.1 Complete the questions and answer them.
Ex.1 Complete the tag-questions and answer them.(Упр.2 стр.4-5)

Example: You travelled a lot during your summer holidays, ...?
-You travelled a lot during your summer holidays, didn't you?
-Yes, I did.(No, I didn't. I stayed at home.)

You didn't go anywhere, ... ?
You stayed in your home town,... ?
The weather was terrible in the summer,... ?
It never rained in the summer, ... ?
You often went boating, ... ?
Nobody went with you,... ?
You didn't make sandcastles on the beach,... ?
You had a lot of fun, ... ?
You couldn't go abroad,... ?
Your parents were with you during the summer,... ?
You weren't in the north of our country,... ?
You didn't go to the forest much,... ?
You saw a lot of interesting places, ... ?
You didn't write a diary,... ?
You invited nobody to visit you,... ?

1 год назад

Предмет: Қазақ тiлi, автор: purtovalusya

Помогите пожалуста на писать.

7 лет назад

Предмет: Английский язык, автор: sakamakilol

Insert the verbs in the correct form.

If I had a spare ticket,I … take you to the cinema.

a) would b) will

2. John suggested that I should … for another job.

a) look b) have looked

3. If she … you,she would be able to advise you.

a) had been b) were

4. We were afraid lest he should … too early.

a) have come b) come

5. She would buy a new fur coat if her husband … enough money.

a) would give b) gave

6. If the students attended all the lectures,they … their exams successfully.

a) would pass b) passed

7. If I were you I … him.

a) would not forgive b) did not forgive

8. I would help the poor if I … very rich.

a) would be b) were

9. If I were a doctor,I … people healthy.

a) made b) would make

10. They … to the country if the weather were better.

a) would go b) went

II 1. If I (know) his name,I’d give it to you.

He (look) a lot better if he did more esercise.

If he worked more carefully,he (not make) so many mistakes.

I wouldn’t do that if I (be) you.

More tourists would come to this seaside if it (have) better climate.

If someone (give) you a submarine,what would you do with it?

If you (not belong) to a union,you couldn’t get a job.

If I (win) a big prize in a lottery,I’d give up my job.

He might get fat if he (go on) eating like that.

If he knew that it was dangerous,he (not come).

III 1. If you (go) on a diet,you (lose) weight.

If we (work) all night,we (finish) in time.

If I see a tiger walking across Hyde Park,I (climb) a tree.

If you (keep) a cat,the mice (not run) about everywhere.

If it (be) summer,the people (not sit) round that big fire.

If you (paint) the walls white,the room (be) much bigger.

If he (take) any exercise,he (not be) so unhealthy.

If they (speak) English to her,her English (improve).

If I (ask) him for help,he (help) me.

If I (know) his address,I (can) write to him.

7 лет назад