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If sin⁻¹x = y, then y must satisfy
A0 ≤ y ≤ π
B-π/2 ≤ y ≤ π/2
C0 < y < π
D-π/2 < y < π/2
Answer & Solution
Correct answer: B. -π/2 ≤ y ≤ π/2
The principal branch of sin⁻¹ maps [-1, 1] onto the closed interval [-π/2, π/2], endpoints included.
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