Предмет: Геометрия, автор: skywhywalker12

обчисліть значення виразів sin30° • cos 150° - sin 135° • tg 120°

Ответы

Автор ответа: s4ndstrm

Ответ:

1/2 *(-√3/2)-(√2/2)*(-√3)=-√3/4 + √6/2

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Русский язык, автор: анг26

подскажите пожалуйста клички животных начинающие на звук( т- д) и (ш- ж)

2 года назад

Предмет: Қазақ тiлi, автор: PaulVass

сочинение на казахском языке на тему виды путешествий

2 года назад

Предмет: Английский язык, автор: Lizarianaseles

Paul: I'm sure that the British have only voted for the items that they like most of all. They have chosen fish and chips. Terrific! The dish is very tasty and has been around for many years. The dish is not very healthy to eat every day but we do! As to Wimbledon, I'm all for it. The Wimbledon tournament is one of the highlights people enjoy every summer. Let's take the Harry Potter books. They are very exciting to read, indeed. To many, Harry Potter is something they can't do without. I think that people's choice is a matter of taste and nothing else

Mike: I think that people vote for this or that thing not because they personally like or not. I'm sure that people vote for traditional items that have been around for many years. They vote for the things that are recognized as part of our culture and our history, for the most significant or most typical items. They vote for what is great in the country, for what best represents Britain. The items people have voted for are easily recognized as the British ones all over the world. And it does not matter what country they come from.

Linda: I don't think that the British have alway made a proper choice. To many, fish and chips is the icon fo England which they can't live without. But i personally have not voted for it. Why? Because the "chip" is not British. It is Belgian. Many people have voted for tea. But tea is not British, either. It came from India! Most British people are crazy about footbal and they have voted for it.OK, footbal is British. But I don's like footbal. Why should I vote for it.

2 года назад

Предмет: Русский язык, автор: artemstratonov

Выпишите сначала предложения, в которых не- с существительными пишется слитно, а затем – раздельно.

1. (Не)правды я не потерплю ни в ком. 2. К (не)счастью, то ж бывает у людей: как ни полезна вещь, цены не зная ей, (не)вежда про нее свой толк всё к худу клонит. 3. Ученье без уменья – (не)польза, а беда. 4. И, полно, куманек! Вот (не)видаль: мышей! Мы лавливали и ершей! 5. Когда в товарищах согласья нет, на лад их дело не пойдет, и выйдет из него (не)дело, только мука. 6. «Как расшумелся здесь! Какой (не)вежа!» - про дождик говорит на ниве камень лежа.

8 лет назад

Предмет: Химия, автор: Sumail13

Составьте для соли формулы соответствующих кислот и оснований
1)Ca^3(PO^4)^2
2)Li^2CO^3

8 лет назад