JEE Mathematics · Medium

Trigonometry: Inverse trig link MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Inverse trig linkMediumQuestion 200032

Question

The principal value of arcsin(1/2) is:
  1. A
    π/6
    Correct
  2. B
    π/3
  3. C
    π/4
  4. D
    5π/6

Correct answer

π/6

Explanation

arcsin(1/2) gives the angle in [−π/2, π/2] whose sine is 1/2. That angle is π/6 (30°).