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📐 Mathematics  ·  Trigonometric Functions  ·  JEE

What is tan 0°?

Answer: 0.

  • A 0
  • B 1
  • C Undefined
  • D 1/2

Correct answer: A. 0

Explanation: tan 0° = sin 0°/cos 0° = 0/1 = 0.

xy0 deg30 deg45 deg (1/sqrt2, 1/sqrt2)60 deg90 degcos45sin45

Unit circle with standard angles 0, 30, 45, 60, 90 degrees; at 45 degrees the point is (cos45, sin45) = (1/sqrt2, 1/sqrt2).

Concept context

Ratios, identities, and applications in triangles

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