Let \(\theta\) be an angle between \(\pi\) and \(3\pi/2\) such that \(\cos(\theta) = -1/9. \)
Assume that \( \cos(\theta/2) < 0. \). Then if the \( \text{terminal point of } \frac{\theta}{2} = (a_1, a_2)\) what is \(\text (a_1, a_2)\) ?
