Cos(64)=x/20

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Solution for Cos(64)=x/20 equation: 


x in (-oo:+oo)

cos(64) = x/20 // - x/20

cos(64)-(x/20) = 0

cos(64)-1/20*x = 0 // - cos(64)

-1/20*x = -cos(64) // : -1/20

x = -cos(64)/(-1/20)

x = 20*cos(64)

x = 20*cos(64)

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