sinx-sin^2x=cos^2x-cosx. Created by elnur4523. algebra-ru

sinx-sin^2x=cos^2x-cosx...

elnur4523 @elnur4523

July 2022 1 8 Report

sinx-sin^2x=cos^2x-cosx

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sedinalana

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Sinx+cosx=cos²x+sin²x
sinx+sin(π/2-x)=1
2sinπ/4*cos(x-π/4)=1
2*√2/2*cos(x-π/4)=1
cos(x-π/4)=1/√2
x-π/4=-π/4+2πn U x-π/4=π/4+2πk
x=2πn,n∈z U x=π/2+2πk,k∈z

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