дорешайте !!!!! Понятно !. Created by Katrina96. algebra-ru

дорешайте !!!!! Понятно !...

Katrina96 @Katrina96

July 2022 1 5 Report

дорешайте !!!!! Понятно !

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Universalka

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Sin²α + Cos²α = 1
Cos²α = 1 - Sin²α
Если α - угол первой четверти, то
$Cos \alpha = \sqrt{1-Sin ^{2} \alpha } = \sqrt{1-( \frac{ \sqrt{7} }{4}) ^{2}} = \sqrt{1- \frac{7}{16} }= \sqrt{ \frac{16}{16} - \frac{7}{16} } = \sqrt{ \frac{9}{16} }=$ $\frac{3}{4}=0,75$

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Katrina96 August 2021 | 0 Ответы

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na szhiganie s2n2n2 zatracheno 10 litrov kisloroda i poluchili 6 litrov uglekislog

reshit uravnenie 10sin2x 12sinxcosx 11cos2x1 pozhalujsta ochen nado

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