1. children need to help parents.2. parents can dress your child every time.3. the child has his duties to fill the bed, wash their dishes.4. if the child will have a lot of money, he will buy unnecessary things.5. if you give a child day for what he does, he will stop in further help. 1. you can pay your child for good grades, and he has a purpose to study well.2. a child may feel more liability, knowing that makes money.3. any work should be rewarded with something.4. this way you can teach a child to work.
если что не так
Отрезок KS - линия пересечения заданных плоскостей.
Проекция апофемы на основание равна радиусу вписанной окружности.
r = OM = 2*cos30° = 2*(√3/2) = √3.
Высота пирамиды Н = √(17 - 2²) = √13.
Отрезок КО равен 2√3.
Длина KS = √(13 + (2√3)²) = √25 = 5.
Из точек М и Р проводим перпендикуляры к KS.
Длина МР как средняя линия трапеции ABEF равна (2 + 4)/2 = 3.
Апофема SM равна √(13 + (√3)²) = √16 = 4.
Отрезки РТ и МТ = 3*sin(MKS) = 3*(4/5) = 12/5.
Искомый угол равен:
α = 2arc sin((3/2)/(12/5) = 2arc sin(5/8) = 77,36437°.
