Question

Алгебра 10 класс......

Answer 1

$1) \ tg(\frac{15 \pi}{14} ) = tg(\frac{\pi}{14}) \\ 3) \ tg(-\frac{6\pi}{7}) = tg(\frac{\pi}{7} )$

Ответ:

$tg\frac{\pi}{3} \ ; \ tg(-\frac{6\pi}{7}) \ ; \ \ tg(\frac{15 \pi}{14} )$