Сравните альфа и бета, если:

[tex]3 \alpha - \frac{ \pi }{3} =arccos (- \frac{1}{2} )[/tex] и [tex]3 \beta - \frac{4 \pi }{3}=arcsin (- \frac{\sqrt{3} }{2} ) [/tex]

Полное решение!!!
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