Editor
Editor
 Sep 18, 2022
0
If $\cos(2\sin^{-1}x)=1/9$ then what is the value of x?
Difficulty: Easy
A: 
1/3
B: 
-2/3
C: 
2/3
D: 
2/3, -2/3
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NETNUST Entry TestMathematicsInverse Trigonometric Functions