Editor
Editor
 Sep 18, 2022
0
The principal value of $\sin^{-1}(-1)$ is
Difficulty: Easy
A: 
$\frac{\pi}{2}$
B: 
$-\frac{\pi}{2}$
C: 
$\pi$
D: 
$-\pi$
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NETNUST Entry TestMathematicsInverse Trigonometric Functions