Solve for x
x=\frac{\cos(v)}{e^{2}}
Solve for v
v=-\arccos(e^{2}x)+2\pi n_{1}\text{, }n_{1}\in \mathrm{Z}
v=\arccos(e^{2}x)+2\pi n_{2}\text{, }n_{2}\in \mathrm{Z}\text{, }|x|\leq \frac{1}{e^{2}}
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e^{2}x=\cos(v)
The equation is in standard form.
\frac{e^{2}x}{e^{2}}=\frac{\cos(v)}{e^{2}}
Divide both sides by e^{2}.
x=\frac{\cos(v)}{e^{2}}
Dividing by e^{2} undoes the multiplication by e^{2}.
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