Editor
Editor
 Sep 18, 2022
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The range of the function $y=\cos^{-1}x$ is
Difficulty: Easy
A: 
$0\leq x\leq 1$
B: 
$-1\leq x\leq 1$
C: 
$-\infty\leq x\leq +\infty$
D: 
$0\leq x\leq \pi$
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NETNUST Entry TestMathematicsInverse Trigonometric Functions