cos(25.9)=72/x

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Solution for cos(25.9)=72/x equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

cos(25.9) = 72/x // - 72/x

cos(25.9)-(72/x) = 0

cos(25.9)-72*x^-1 = 0

-72*x^-1 = -cos(25.9) // : -72

x^-1 = cos(25.9)/72

-1 < 0

1/(x^1) = cos(25.9)/72 // * x^1

1 = (cos(25.9)/72)*x^1 // : cos(25.9)/72

72*(cos(25.9))^-1 = x^1

x = 72*(cos(25.9))^-1

x = 72*(cos(25.9))^-1

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