если
[tex] \tan( \alpha - \beta ) = 2 \\ \sin( \beta = \frac{3}{5} ) \\ \frac{\pi}{2} < \beta < \pi[/tex]
то найдите tgA
[tex] \tan( \alpha - \beta ) = 2 \\ \sin( \beta = \frac{3}{5} ) \\ \frac{\pi}{2} < \beta < \pi[/tex]
то найдите tgA
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