докажите что косвинус 70 градусов равен синусу 20 градусов

Write about yourself. What is that you.

1. never (seldom, often, always) object to

2. like to participate in

3. are never guilty of

4. are (not) used to

5. are (not) capable of doing

6. usually get tired of

7. will never (would like to) participate in

8. are really interested in

9. look forward to

определите давление на глубине0,6 метров в воде,керосине,ртути.

Найти пределы функций не пользуясь правилом лопиталя

limx→0(cos(x)-cos^2(x))/x^2

limx→∞(x-3)ln((2x+1)/2x)

Годы учебы Владимира Семеновича Высоцкого