1) tgx=1 2)tgx=-1 3)tgx=0 4)tgx=-2 5)tg^2x-6tgx+5=0 6)tg^2x-2tgx-3=0

1) tgx = 1 x = π/4 + πn, n∈Z 2) tgx = - 1 x = - π/4 + πn, n∈Z 3) tgx = 0 x = πk, k∈Z 4) tgx = - 2 x = arctg(-2) + πk, k∈Z x = -arctg(2) + πk, k∈z 5)  tg^2x - 6tgx + 5 = 0 a)  tgx = 1 x1 = π/4 + πn, n∈Z b)  tgx = 5 x2 = arctg(5) + πk, k∈z 6)  tg^2x - 2tgx - 3 = 0 a)  tgx = - 1 x1 = - π/4 + πn, n∈Z b)  tgx = 3 x2 = arctg(3) + πk, k∈z