В прямоугольном треугольнике ABC угол A=30 градусов,AB=20 см.Найдите AC и косинус C

расположите так горы чтобы они стояли с самой большой до самой маленькой: Уральские горы, Кавказские горы, Гималаи.

напишите сказку о волшебных событиях которые могли бы произойти в вашем классе

I can speak Russin with them says Pete.I know I know Russian very well.But if English or American children come to see us,don*t you to speak them?asks Peter*s father.Of course I do says Pete.Well,dear.and then don*t want to go to England or America?asks Pete*s father.I*d love to,says Pete.Then you must know English well if you want to speak with your English or American friends.Pete thinks a little and then asks,But do American and Ehglish children learn Russian?On,yes, and very are very good pupils,says Pete*s father.It*s great!Then I can speak Russian with them,says Pete.Shame on you ,a lazy boy!Don*t be angry father.It*s a joke .I know why I must learn English .I am glad that you clever ,my son, to understand if.Get only good marks in English Перевести