Дано треугольник ABC

[tex]a=2,b=4,\alpha=60[/tex](градусам)

Найти:[tex]c,\beta,\gamma[/tex]

помогите ответить на вопрос по стихотворению А.А.Фета Учись у них-у дуба у берёзы вот вопрос Зная биографию поэта(А.А.Фета)объясните последнюю строку второй строфы. вот эта строка ОНИ СТОЯТ,МОЛЧАТ;МОЛЧИ И ТЫ! помогите плизз

1) Выберите функции хлоропластов:
А.Синтез АТФ
Б. Образование лизосом
В.Синтез глюкозы
Г. Синтез РНК
Д. Клеточное дыхание
Е. Выделение кислорода
ВАРИАНТЫ ОТВЕТОВ:
А)А,В,Е
Б) В,Д,Е
В)А,Б,Д
Г)Б,Г,Д                                                                  
второй вопрос) В результате митоза происходит: А)Заживление ран Б)Образование гамет В)Образование зиготы Г) Размножение животных.

помогите плиииз:))))

Who is saying these words? Replace the pronouns with the correct speakers.

1. They used to let him go to the disco with his friends.
2. They expected him to phone and warn them that he would be late.
3. They let him go to the disco again.
4. He told them that that John had been getting a lot of bad marks in the last few months.
5. They wanted him to explain his behaviour.
6. Since then our parents haven't let him go out.

вот сам диалог:

Mark: What happened here yesterday? Your brother John and your parents aren't talking to each other.
Emily: John wanted to go to the disco again.
Rob: What's wrong with that?
Emily: It's a long story. John is going to be fifteen this year and our parents used to let him go to the disco with his friends. Everything was OK until a month ago: John always came back on time and everybody was happy. A month ago John went to the disco as usual and promised to be home at ten o'clock. When he didn't come at ten, our parents expected him to phone and tell them what was going on, but he didn't phone. That night he came home at midnight and our parents were very upset. After that night they warned John not to do it again and our parents let him go back to the disco. But then he was late again and once again he didn't phone. A couple of days later John's teacher asked our parents to come to the school. He told Mom and Dad that John had been getting a lot of bad marks in the last few months. Our parents wanted John to explain everything and asked him a lot of questions, but he refused to answer them. Since then our parents haven't let him go out, and every Friday when his friends go to the disco and have fun, he has to stay at home and watch TV.
Rob: That's really not fair!
Misha: They make a fifteen-year-old stay at home! They don't have much respect for him!
Mark: I don't agree with you. John's parents trusted him and he let them down. It's his own fault.

Причины резкой смены внешнеполитического курса Павла I