11-99cos^2x если sin^2x=0.9

[latex]11-99 cos^2x//////////sin^2x=0.9[/latex] Если: [latex]sin^{2}x=0.9 [/latex] [latex]Sin^2x + cos^2x = 1[/latex] [latex]\\ cos^{2}x=1-sin^{2}x=1-0.9=0.1[/latex] [latex] \\ 11-99cos^{2}x=11-99*(0.1)=1.1[/latex]