Solve for X

solve for x: cos(x)=0.342/0.798

$\begin{array}{rcll} \cos(x) &=& \frac{0.342}{0.798} \\ \cos(x) &=& 0.42857142857 \qquad & | \qquad \pm\arccos{()}\\ x &=& \pm\arccos{( 0.42857142857 )}\\ x &=& \pm64.6230664748^{\circ}\\ \mathbf{ x_1 } & \mathbf{=} & \mathbf{64.6230664748^{\circ} }\\\\ x_2 &=& -64.6230664748^{\circ} \\ x_2 &=& -64.6230664748^{\circ}+ 360^{\circ} \\ \mathbf{ x_2 } & \mathbf{=} & \mathbf{295.376933525^{\circ}} \end{array}$