Вычислите: sin[tex] 13\pi/6[/tex]; cos(405); tg([tex] -11\pi/6[/tex]) ; ctg [tex] 5\pi/4[/tex]. Created by tepliakowaelen. algebra-ru

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March 2022 1 16 Report

Вычислите: sin[tex] 13\pi/6[/tex]; cos(405); tg([tex] -11\pi/6[/tex]) ; ctg [tex] 5\pi/4[/tex]

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NNNLLL54

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$sin\frac{13\pi}{6}=sin(2\pi +\frac{\pi}{6})=sin\frac{\pi}{6}=\frac{1}{2}\\\\cos405^0=cos(360^0+45^0)=cos45^0=\frac{\sqrt2}{2}\\\\tg(-\frac{11\pi}{6})=-tg(2\pi -\frac{\pi}{6})=-tg(-\frac{\pi}{6})=tg\frac{\pi}{6}=\frac{\sqrt3}{3}\\\\ctg\frac{5\pi}{4}=ctg(\pi +\frac{\pi}{4})=ctg\frac{\pi}{4}=1$

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6 klass vypishite nomera pravilnyh suzhdenij 1 vodorosli vstrechayutsya tolko v so

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tepliakowaelen March 2022 | 0 Ответы

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6 klass vypishite nomera pravilnyh suzhdenij 1 vodorosli vstrechayutsya tolko v so

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