Question

Корни уравнения tgx=tg$pi$/5 равны

Answer 1

$mathrm{tg}x=mathrm{tg}frac{pi}{5} \ x=mathrm{arctg(tg}frac{pi}{5} )+pi n,n in mathbb{Z}\ x=frac{pi}{5} +pi n,n in mathbb{Z}$