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[tex]\displaystyle\tan\left(\frac{\pi}{4}+\arctan\frac{2}{7}\right);\\
\tan\left(\arcsin\frac{4}{5}+\text{arcctg}\; \frac{3}{4}\right)[/tex]
[tex]\displaystyle\tan\left(\frac{\pi}{4}+\arctan\frac{2}{7}\right);\\
\tan\left(\arcsin\frac{4}{5}+\text{arcctg}\; \frac{3}{4}\right)[/tex]
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