Cos(65)=x/18

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Solution for Cos(65)=x/18 equation: 


x in (-oo:+oo)

cos(65) = x/18 // - x/18

cos(65)-(x/18) = 0

cos(65)-1/18*x = 0 // - cos(65)

-1/18*x = -cos(65) // : -1/18

x = -cos(65)/(-1/18)

x = 18*cos(65)

x = 18*cos(65)

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