Level:
Project ID:
1003085901
Accepted:
1
Clonable:
0
Easy:
0
The solution set of the inequality \( \cos^2x\leq0.25 \) for \( x\in[0;2\pi] \) is:
\( \left[ \frac{\pi}3;\frac{2\pi}3\right]\cup\left[ \frac{4\pi}3;\frac{5\pi}3\right] \)
\( \left[ \frac{\pi}3;\frac{5\pi}3\right] \)
\( \left[ 0;\frac{2\pi}3\right] \)
\( \left[ 0;\frac{5\pi}3\right] \)