Level:
Project ID:
9000046605
Accepted:
1
Clonable:
0
Easy:
0
Identify an inequality which is true for
\(x = \frac{\pi } {6}\).
\(\sin x\cdot \cos x < \frac{\sqrt{2}}
{2} \)
\(\cos 2x > \frac{\sqrt{2}}
{2} \)
\(\mathop{\mathrm{tg}}\nolimits (-x) > 0\)
\(\mathop{\mathrm{cotg}}\nolimits ^{2}x < 0\)