Тело равномерно скользит по наклонной плоскости. Чему равен угол наклона плоскости к горизонту (в градусах), если коэффициент трения

1. My cousin goes to school every day.
2. Are you reading a magazine and thinking about your holiday at the moment?
3. They are good dancers but they don't go to discos very often.