Mathematics Trigonometry Inverse Trigonometric Functions

If \(\rm \cos\left(\sin^{−1} \frac{2}{5}+\cos^{−1} x\right)\) = 0, then x is equal to

1
\(\frac{1}{5}\)
2
\(\frac{2}{5}\)
3
0
4
More than one of the above
5
None of the above

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