Level:
Project ID:
2000005402
Accepted:
0
Clonable:
0
Easy:
1
What is the measure of the angle \(x\), \(x \in [ 0;2\pi)\), for which \(\cos x = \frac{\sqrt{2}}{2}\) and \(\mathrm{tg}\,x < 0 \)?
\( \frac{7}{4}\pi\)
\( \frac{1}{4}\pi\)
\( \frac{3}{4}\pi\)
\( \frac{5}{4}\pi\)