4cos2a*sina*cosa=sin4a Очень срочно Даказать тождество!! - №28146228

4cos2a*sina*cosa=sin4a
Очень срочно
Даказать тождество!!
- Предмет:
  Математика
- Автор:
  connorkaca
- 5 лет назад

Ответы 1

Я не знаю как тебе помочь
- Автор:
  guinnessuv7f
- 5 лет назад
- 0
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Помогите пожалуйста, поставлю лучший ответ.
2. Fill in the comparative or superlative form.

1. Nick is (short) than Jim.
2. Nick is (short) boy in the class.
3. Kate is (successful) than Ann.
4. This is (good) film I have ever seen.
5. Henry is as (clever) as his brother.

3. Choose the right variant

1.We moved to the city because we needed some ....... and quiet.
A fresh B peace C sleep

2 The detective ....... a mysterious letter in the cupboard.
A is finding B found C was finding

3 Kathy was doing her homework while Suzie ....... .
A was cooking B cooks C is cooking

4 The police officer asked to see my ....... .
A ID B surf C rate

5 I like ....... films because they usually take place in space.
A adventure B drama C science-fiction

6 It’s difficult for athletes to ....... a world record during the Olympic Games.
A recover B break C find

7 I don’t like the hustle and ....... of big cities.
A alarm B bustle C lifestyle

8 A scorpion was found in a ....... of grapes.
A glass B bouquet C bunch
9 John ......., took a shower and left for work.
A was getting up B got up C get up

10 ....... when you rang the doorbell?
A Were they sleeping B Did they sleep C Are they sleeping

11 I was ....... to see that the puppy found a home.
A happy B shocked C interested

12 We ....... the dog for a walk every morning.
A are taking B take C taking

13 My classmates were writing an essay when I ....... in the class.
A was walking B walk C walked

14 I bought some really nice ....... for my MP3 player.
A laptops B headphones C submarines

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19 Documentaries are very ....... .
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20 I got a ....... camera for my birthday.
A virtual B digital C mobile

21 If you press the ....... the screen will turn on.
A button B dome C gadget
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