Level:
Project ID:
2010016803
Source Problem:
Accepted:
0
Clonable:
1
Easy:
1
The value of \( \cos\left(-\frac{28\pi}3\right) \) is the same as the value of
\( \cos\frac{4\pi}3 \).
\( \cos\frac{\pi}3 \).
\( \cos\left(-\frac{7\pi}3\right) \).
\( \cos\frac{5\pi}3 \).