Mathematics · Inverse Trigonometric Functions
If y = cot-1 x and x < 0, then which of the following is correct?
- 1-π2 ≤ y < 0
- 2-π2 < y < 0
- 3π2 < y < π✓
- 4π2 < y ≤ π
Correct answer
π2 < y < π
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