Cos(40)=x/61

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Solution for Cos(40)=x/61 equation: 


x in (-oo:+oo)

cos(40) = x/61 // - x/61

cos(40)-(x/61) = 0

cos(40)-1/61*x = 0 // - cos(40)

-1/61*x = -cos(40) // : -1/61

x = -cos(40)/(-1/61)

x = 61*cos(40)

x = 61*cos(40)

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