Evaluate ∫[0 to 1] 1/√(1 - x²) dx.
Evaluate ∫[0 to 1] 1/√(1 - x²) dx.
- A. π
- B. π/4
- C. 1
- D. π/2
Answer: D) π/2
Explanation: The anti-derivative is sin⁻¹(x). Evaluating from 0 to 1: sin⁻¹(1) - sin⁻¹(0) = π/2 - 0 = π/2.
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