The value of cot⁻¹(−1/√3) is:
The value of cot⁻¹(−1/√3) is:
- A. π/3
- B. 2π/3
- C. 5π/6
- D. π/6
Answer: B) 2π/3
Explanation: cot⁻¹(−x) = π − cot⁻¹(x). cot⁻¹(1/√3) = π/3. So cot⁻¹(−1/√3) = π − π/3 = 2π/3, which lies in (0, π).
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