$$$\operatorname{acos}{\left(- \frac{1}{3} \right)}$$$

Find $$$\operatorname{acos}{\left(- \frac{1}{3} \right)}$$$.

$$$\operatorname{acos}{\left(- \frac{1}{3} \right)}\approx 1.910633236249019$$$A

$$$\operatorname{acos}{\left(- \frac{1}{3} \right)} = \left(\frac{180 \operatorname{acos}{\left(- \frac{1}{3} \right)}}{\pi}\right)^{\circ}\approx 109.471220634490691^{\circ}$$$A

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