$\cos(x) = 0$ denkleminin $[-\pi, \pi]$ aralığındaki çözüm kümesi nedir?
A) $\left\{-\frac{\pi}{2}, \frac{\pi}{2}\right\}$
B) $\left\{\frac{\pi}{2}, \frac{3\pi}{2}\right\}$
C) $\left\{-\frac{\pi}{2}, \frac{3\pi}{2}\right\}$
D) $\left\{\frac{\pi}{4}, \frac{3\pi}{4}\right\}$
E) $\left\{-\frac{\pi}{4}, \frac{\pi}{4}\right\}$
