Вычислите \(\sin(\arcctg(-2)).\) \(\frac{1}{\sqrt2}\) \(\frac{1}{\sqrt3}\) \(\frac{1}{\sqrt5}\) \(-\frac{1}{\sqrt3}\)
Задание

Вычислите \(\sin(\arcctg(-2)).\)

  • \(\frac{1}{\sqrt2}\)
  • \(\frac{1}{\sqrt3}\)
  • \(\frac{1}{\sqrt5}\)
  • \(-\frac{1}{\sqrt3}\)