cos(65)=x/3

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Solution for cos(65)=x/3 equation: 


x in (-oo:+oo)

cos(65) = x/3 // - x/3

cos(65)-(x/3) = 0

cos(65)-1/3*x = 0 // - cos(65)

-1/3*x = -cos(65) // : -1/3

x = -cos(65)/(-1/3)

x = 3*cos(65)

x = 3*cos(65)

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