Math Problem Solver

The principal value in $- \frac{\pi}{4} \le x \le \frac{\pi}{4}$ is $x \approx 0$

The real solutions are: $$\begin{aligned}x &= \left\{\pi n\; \middle|\; n \in \mathbb{Z}\right\} \approx \left\{3.1415927 n\; \middle|\; n \in \mathbb{Z}\right\}\\x &= \left\{\pi \left(\frac{1}{2} + n\right)\; \middle|\; n \in \mathbb{Z}\right\} \approx \left\{3.1415927 n + 1.5707963\; \middle|\; n \in \mathbb{Z}\right\}\end{aligned}$$