# Answer to Question #9993 in Molecular Physics | Thermodynamics for Eliana Hernandez

solve on the interval [0, 2pi). 2.cos(x)=-0.8092

1
2012-05-25T08:55:13-0400

2cos(x)=-0.8092 ,so cos(x)=-0.4046. x=arccos(-0.4046)=1.987

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