Найдите tg α и ctg α, если sin α = 3/5.

1. She got bad mark, because she had done a lot of mistakes.
2. Nick didn't want to eat at our house, because he had eaten at home.
3. When I arrived from the theatre, the guests had left.
4. He wrote the weather had been cloudy since 1 of September.
5. The radio claimed that the train had arrived.