Обчисліть:
[tex] \tan( \beta ) [/tex]

[tex] \cos( \beta ) [/tex]
[tex] \cot( \beta ) [/tex]
якщо
[tex] \sin( \beta ) = - 0.8[/tex]
[tex]\pi \leqslant \ \beta \leqslant \frac{3\pi}{2} [/tex]


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