Cos(55)=x/3

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Solution for Cos(55)=x/3 equation: 


x in (-oo:+oo)

cos(55) = x/3 // - x/3

cos(55)-(x/3) = 0

cos(55)-1/3*x = 0 // - cos(55)

-1/3*x = -cos(55) // : -1/3

x = -cos(55)/(-1/3)

x = 3*cos(55)

x = 3*cos(55)

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