Solve Each Equation or Inequality Over the Indicated Interval $\tan ^{2} x \geq 1,\left(-\frac{\pi}{2}, \frac{\pi}{2}\right)$

Short Answer

Solve each equation or inequality over the indicated interval.
- $\tan ^{2} x \geq 1,\left(-\frac{\pi}{2}, \frac{\pi}{2}\right)$