Предмет: Математика, автор: gulnarafatehov

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√2*Cos945

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Автор ответа: wangross

$\sqrt{2} cos945= \sqrt{2} cos(900+45)=- \sqrt{2} cos45=- \sqrt{2} * \frac{ \sqrt{2} }{2} =- \frac{2}{2} =-1$

notspam: =0 Я УВИДЕЛ ЭТОТ ТОЧЬ В ТОЧЬ В МЕЙЛ РУ!!!

notspam: не.ну вы меня извените=) но это плагиат,так нельзя:) если бы так было можно то..... боюсь у всех было бы по 10 000 баллов) сюда приходят помогать а не зарабатывать баллы) глупым людям тут делать НЕ ЧЕ ГО =)

notspam: Это не оскорбление,это обьяснение ;)

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