Предмет: Алгебра, автор: jumaevadaana

Найдите sina,если cosa=0,6

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Автор ответа: kamilmatematik100504

$\displaystytle\bf \boxed{sin^2\alpha +cos^2\alpha =1} =>sin\alpha =\pm\sqrt{1-cos^2\alpha } \\\\sin\alpha =\pm\sqrt{1-0,6^2} =\pm0,8\\\\Otvet:sin\alpha=\pm0,8$

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