Q. Which trigonometric ratio is undefined at 0°?

  • (A) Cos
  • (B) Sec
  • (C) Cot
  • (D) Sin
✅ Correct Answer: (C) Cot
Explanation: cot 0° = cos 0°/sin 0° = 1/0, which is undefined.

Published by Roshan ⭐ 3.43K Points at 05-Jul-2026 12:26 pm in Math

Explanation by: Roshan
cot 0° = cos 0°/sin 0° = 1/0, which is undefined.

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