Answer:
[tex]d.\:\:\frac{\pi}{2}[/tex]
Step-by-step explanation:
Let [tex]y=\arccos(0)[/tex]
This implies that;
[tex]\cos(y)=0[/tex]
The angle whose cosine is zero is [tex]\frac{\pi}{2}[/tex] radians.
That is;
[tex]\cos(\frac{\pi}{2} )=0[/tex]
Therefore;
[tex]\arccos(0)=\frac{\pi}{2}[/tex]
The correct answer is D.
