The value of tan⁻¹(1/2) + tan⁻¹(1/3) is:

The value of tan⁻¹(1/2) + tan⁻¹(1/3) is:

• A. π/4
• B. π/3
• C. π/2
• D. π/6

Answer: A) π/4

Explanation: Using tan⁻¹(x) + tan⁻¹(y) = tan⁻¹((x+y)/(1−xy)) since xy < 1. tan⁻¹((1/2 + 1/3) / (1 − 1/6)) = tan⁻¹(1) = π/4.