Предмет: Алгебра, автор: rogozhnikova2021

СРОЧНО !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Автор ответа: Miroslava227
0

Ответ:

4 четверть => синус отрицательный

\sin( \alpha ) = \sqrt{1 - { \cos }^{2} ( \alpha )}

\sin( \alpha ) = - \sqrt{1 - \frac{144}{169} } = - \sqrt{ \frac{25}{169} } = - \frac{5}{13}

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