Verified answer

Ответ:

x = π/10 + 2πn/5, n∈Z

Пошаговое объяснение:

tg x*ctg x=sin 5x​

1 = sin 5x

sin5x = 1

5x= π/2 +2πn, n∈Z

x = π/10 + 2πn/5, n∈Z