cos 2α + tg α sin 2αупростить ...

AvdeevaSasha @AvdeevaSasha

July 2022 1 8 Report

cos 2α + tg α sin 2α
упростить

Answers & Comments

mesteron98 Cos2a +tga*sin2a = cos2a+(sina/cosa)*2*sina*cosa = cos2a + 2*(sina)^2 =
= (cosa)^2 - (sina)^2 + 2*(sina)^2 = (cosa)^2+(sina)^2 = 1

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