Упрости выражение: [tex]\frac{cos(2\alpha )}{cos^{2}\alpha }[/tex]. Created by titarenkopolina7. algebra-ru

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titarenkopolina7 @titarenkopolina7

August 2022 1 5 Report

Упрости выражение:
[tex]\frac{cos(2\alpha )}{cos^{2}\alpha }[/tex]

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$\displaystyle\bf\\\frac{Cos2\alpha }{Cos^{2}\alpha } =\frac{2Cos^{2}\alpha -1 }{Cos^{2} \alpha } =\frac{2Cos^{2}\alpha }{Cos^{2} \alpha } -\frac{1}{Cos^{2} \alpha } =2-(1+tg^{2} \alpha )=\\\\=2-1-tg^{2} \alpha=1-tg^{2} \alpha$

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a a 15x 17 x a gt

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titarenkopolina7 August 2022 | 0 Ответы

s ostayotsya postoyannymd srednee znachenie modulya proekcii skorosti vseh molekul

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a a 15x 17 x a gt

s ostayotsya postoyannymd srednee znachenie modulya proekcii skorosti vseh molekul

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