Упростить выражения Sin(-a) ctg(-a)/ cos( 360 градусов-а) tg( 180 градусов+a) . Created by moiseenkonasta. algebra-ru

cos( 360 градусов-а) tg( 180 градусов+a) ...

June 2022 1 32 Report

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Sin(-a) ctg(-a)/ cos( 360 градусов-а) tg( 180 градусов+a)

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andry444 $cos(360- \alpha )=cos \alpha \\ tg(180+ \alpha )=tg \alpha \\ \frac{sin(- \alpha )* \frac{cos(- \alpha )}{sin(- \alpha) } }{cos \alpha * \frac{sin \alpha }{cos \alpha } } = \frac{cos(- \alpha )}{sin \alpha }= \\ //cos(- \alpha ) =cos \alpha //$
$=ctg \alpha$

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pomogite pozhalujsta reshite sistemu uravnenij metodom algebraicheskogo slozheniya 2s

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moiseenkonasta August 2022 | 0 Ответы

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reshite sistemu uravnenij metodom podstanovki 1 y2x i x3 y

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