Решите пожалуйста!! 20 баллов. Все задания. Заранее большое спасибо!!!

Помогите пожалуйста!!!!! Упростить выражение: 

sin(п+α)cos(п-α)\ctg(3п\2-α)

сочинение нужна ли человеку музыка

Match the questions in the first column with yhe answer in the second. 1. Your cat has got the first prise in a TV show , hasn't he? 2.could you answer a few questions for the magazine "Our Pets"? 3. What can your cat do? 4.What is your cat like? 5. What do you like to do together? a) Yes, Edward is the smartest cat in the world! b)He can catch mice. And I'm sure he understands a lot. c) He is vere kind, loving and a little shy. He is very friendly to dogs and ofter animals. d)We like to play and go for walks together. e) Yes, of course.