$$$\operatorname{acos}{\left(\frac{1}{2} \right)}$$$

$$$\operatorname{acos}{\left(\frac{1}{2} \right)}$$$을(를) 구하시오.

$$$\operatorname{acos}{\left(\frac{1}{2} \right)} = \frac{\pi}{3}\approx 1.047197551196598$$$A

$$$\operatorname{acos}{\left(\frac{1}{2} \right)} = 60^{\circ}$$$A

그래프는 graphing calculator를 참고하세요.