E
Editor
Sep 18, 2022
The exact value of $\cos^{-1}(0)$ is
Difficulty: Easy
A:
$\frac{\pi}{2}$
B:
$\frac{-\pi}{2}$
C:
$3\pi$
D:
$\pi-\frac{\pi}{6}$
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ID: 63273db9ca83163ac3a1158f