cos(2x-pi/4)=sqrt2/2

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Solution for cos(2x-pi/4)=sqrt2/2 equation: 


N/2-6 = -3

v = 3.14*(4/3)*9^3

v = 3.14*(4/3)*6^3

v = 3.14*(4/3)*18^3

v = 3.14*(4/3)*10^3

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