Предмет: Алгебра, автор: анастасия711

Как решать такие выражения?

Приложения:

Ответы

Автор ответа: kazimierz2015

$=-46 \sqrt{2}cos \frac{\pi}{4}sin \frac{\pi}{4}= - \frac{46}{2}=-23$

Автор ответа: julyap

$46 \sqrt{2} cos(- \frac{ \pi }{4} )sin(- \frac{ \pi }{6} )=-46 \sqrt{2} cos \frac{ \pi }{4} sin \frac{ \pi }{6} = \\ \\ =-46 \sqrt{2} * \frac{ \sqrt{2} }{2} * \frac{1}{2} =-46* \frac{ \sqrt{2} * \sqrt{2} }{2*2} =-46* \frac{2}{4} = \\ \\ =- \frac{46}{2} =-23$

анастасия711: не могла бы ты решить на листочке и сфоткать?а то я не понимаю что это за sqrt

julyap: обнови страницу

анастасия711: У меня на телефоне это приложени...автоматом обновляется,и всё равно sqrt

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