Mathematics: Tan(180°+30)_2tan(180°_30)

Tan(180°+30)_2tan(180°_30) - id1803021803013081295, ayoismeisalex

Ответ:

dondre54

06.05.2021

$\tan(180 \degree + 30\degree) - 2 \tan(180\degree - 30\degree) \\ = \frac{ \sin(210\degree) }{ \cos(210\degree) } - 2 \frac{ \sin(150\degree) }{ \cos(150\degree) } \\ = \frac{ - 0.5}{ - \frac{ \sqrt{3} }{2} } - 2 \frac{0.5}{ - \frac{ \sqrt{3} }{2} } \\ = \frac{0.5 + 1}{ \frac{ \sqrt{3} }{2} } \\ = 0.693 \\ = ln(2)$

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Ответ:

culturedxnat

08.03.2020

Mathematics

Step-by-step explanation:

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