$$$\operatorname{acos}{\left(7 \right)}$$$

$$$\operatorname{acos}{\left(7 \right)}$$$을(를) 구하시오.

$$$\operatorname{acos}{\left(7 \right)}\approx 2.633915793849633 i$$$A

$$$\operatorname{acos}{\left(7 \right)} = \left(\frac{180 \operatorname{acos}{\left(7 \right)}}{\pi}\right)^{\circ}\approx \left(150.912258580433784 i\right)^{\circ}$$$A

그래프는 graphing calculator를 참고하세요.