0

$\frac{\pi}{2}$

$\frac{3 \pi}{2}$

$\frac{5 \pi}{2}$

$\frac{\pi}{2}-\frac{1}{3} \tan ^{-1} 2$

$-\frac{\pi}{4}-\frac{4}{3} \tan ^{-1} 2$

$\frac{\pi}{6}+\frac{2}{3} \tan ^{-1} 2$

$-\frac{\pi}{12}+\frac{2}{3} \tan ^{-1} 2$

$20 \sqrt{2}$

$10 \sqrt{2}$

$40 \sqrt{2}$

$80 \sqrt{2}$

$\log \frac{\sqrt{3}-1}{\sqrt{6}}$

$\log (2 \sqrt{2}(\sqrt{3}+1))$

$\log \frac{\sqrt{3}+1}{\sqrt{6}}$

$\log (2 \sqrt{2}(\sqrt{3}-1))$