Math Problem Solver

The principal value in $- \frac{\pi}{4} \le x \le \frac{\pi}{4}$ is $x \approx -0.15234633$

The real solutions are: $$\begin{aligned}x &= \left\{\pi - \frac{\arctan{\left(\frac{3 \sqrt{91}}{91} \right)}}{2} + \pi n\; \middle|\; n \in \mathbb{Z}\right\} \approx \left\{3.1415927 n + 2.9892463\; \middle|\; n \in \mathbb{Z}\right\}\\x &= \left\{\frac{\pi}{2} + \frac{\arctan{\left(\frac{3 \sqrt{91}}{91} \right)}}{2} + \pi n\; \middle|\; n \in \mathbb{Z}\right\} \approx \left\{3.1415927 n + 1.7231427\; \middle|\; n \in \mathbb{Z}\right\}\end{aligned}$$