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arcsin(x) + arccos(x) =

Aπ
Bπ/2 (complementary)
C0
Dx
Answer & Solution
Correct answer: B. π/2 (complementary)
For x ∈ [-1, 1]: sin⁻¹(x) + cos⁻¹(x) = π/2. (Because sin θ = x means cos(π/2 - θ) = x.)
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