Himpunan penyelesaian dari persamaan trigonometri tan(x+π4)=tan3π4\tan\left(x+\frac{\pi}{4}\right)=\tan\frac{3\pi}{4}tan(x+4π)=tan43π dengan 0≤x≤2π0\le x\le2\pi0≤x≤2π adalah ....
{14π,18π}\left\{\frac{1}{4}\pi,\frac{1}{8}\pi\right\}{41π,81π}
{12π,18π}\left\{\frac{1}{2}\pi,\frac{1}{8}\pi\right\}{21π,81π}
{12π, 118π}\left\{\frac{1}{2}\pi,\ 1\frac{1}{8}\pi\right\}{21π, 181π}
{12π, 112π}\left\{\frac{1}{2}\pi,\ 1\frac{1}{2}\pi\right\}{21π, 121π}
{12π,14π}\left\{\frac{1}{2}\pi,\frac{1}{4}\pi\right\}{21π,41π}