чему равно выражение [tex]3 \sqrt{3} cos(arctg \sqrt{2} )[/tex]. Created by olgalmenko. algebra-ru

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olgalmenko @olgalmenko

July 2022 1 14 Report

чему равно выражение [tex]3 \sqrt{3} cos(arctg \sqrt{2} )[/tex]

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Матов

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$arctg\sqrt{2}=arccos\frac{1}{\sqrt{1+\sqrt{2}^2}} = \frac{1}{ \sqrt{3}}\\
 3\sqrt{3}*cos(arccos(\frac{1}{\sqrt{3}})) = 3\sqrt{3}* \frac{1}{\sqrt{3}} = 3$

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olgalmenko Спасибо

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olgalmenko July 2022 | 0 Ответы

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olgalmenko July 2022 | 0 Ответы

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olgalmenko July 2022 | 0 Ответы

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