Teaching AP DSC School Assistant 2025 Mock Test Series Mathematics Trigonometry Inverse Trigonometric Functions

If (sin–1 x)2 + (cos–1 x)2 = \(\frac{5\pi^2}{8}\), then find the value of x.

1
± 1/\(\sqrt2\)
2
± 1/2\(\sqrt2\)
3
± 1/2
4
± 1/\(\sqrt3\)
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