§ 29: 29.1

29.1 Розв’яжіть рівняння:

1) tgx = 3; x = arctg3 + πn, n ∈ Z; x = π3 + πn, n ∈ Z;

2) tgx = –1; x = arctg(–1) + πn, n ∈ Z; x = –π4 + πn, n ∈ Z;

3) tgx = 5; x = arctg5 + πn, n ∈ Z;

4) ctgx = 33; tg = 3; x = arctg3 + πn, n ∈ Z; x = π3 + πn, n ∈ Z;

5) ctg x = –3; tg x = –33; x = arctg(–33) + πn, n ∈ Z; x = – π6 + πn, n ∈ Z;

6) ctg x = 0; x = π2 + πn, n ∈ Z.