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косинус 2 альфа плюс 2 синус в квадрате п минус альфа
Ответы 3
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спасибо большое
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Автор:
basil - 5 лет назад
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0
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Удачи.
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Автор:
ryleighyx6v - 5 лет назад
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0
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Ответ:
Объяснение:
cos(2α)+2*sin²(π-a)=cos²α-sin²α+2*sin²α=cos²α+sin²α=1.
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Автор:
cedricixsm - 5 лет назад
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0
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Тест 6 класс
1) Письменно переведите текст
Text
It's winter. It's cold and snowy. The Donkey is sad. "I don't like winter because I haven't got any green grass. I can't walk in the park. In spring I will walk and play with children," says the Donkey.
Spring comes. It's warm and sunny. Now the Donkey is in the park. He has got a lot of green grass to eat. But he is sad again.
"I don't like spring! The children are very noisy in the park. In summer I will dive and swim," says the Donkey.
Summer comes. It's hot. The children dive and swim. They ride bikes and scooters, play badminton and football. But the Donkey is sad again.
"I don't like summer because it's very hot. In autumn I will eat apples and carrots," says the Donkey.
Autumn comes. It's cloudy and rainy. Now the Donkey has got a lot of apples and carrots to eat. But he is sad again. "I don't like autumn because it's cloudy, windy and rainy. In winter I will play snowballs and toboggan."
Winter comes. But the Donkey is sad again...
2) Письменно ответьте на вопросы
1. What is the weather like in winter?
1. It's very hot
2. It's cold and snowy
3. It's cloudy and rainy
4. It's warm and sunny
1. Why the Donkey doesn’t like spring?
1. Because the Donkey will dive and swim
2. Because it's very hot
3. Because the Donkey will eat apples and carrots
4. Because the children are very noisy in the park
1. When can the Donkey eat a lot of apples and carrots?
1. In winter
2. In summer
3. In autumn
4. In spring
3) Соотнесите левую колонку таблицы (начало предложения) с левой колонкой (конец предложения):
I) In summer a) the Donkey has got a lot of green grass to eat
II) In winter b) the children dive and swim
III) In spring c) the Donkey will play snowballs and toboggan
4) Напишите ответ на вопрос:
1. What do you like to do when it’s sunny and warm, when it’s cold and snowy, when it’s rainy and humid etc? (5 sentences)
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
5) Составьте предложение: winter, In, when, is, it, and, snowy, can, we, snowballs, play, and, a, make, snowman
______________________________________________________________________________________________________________________________________________
6) Расставьте предложения так, чтобы получился рассказ, с последовательностью действий как в основном тексте:
1 2 3 4 5
b
1. In summer the Donkey is sad because the temperature is very high.
2. In winter the Donkey is sad because he has not any green grass to eat.
3. In autumn the Donkey is sad because it rains.
4. The Donkey is always sad.
5. In spring the Donkey is sad because the kids are noisy.-
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Автор:
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Ответов:
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