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Miscellaneous·2022·Easy

What is the diameter of a circle inscribed in a regular polygon of 15 sides with side length unity ?

What is the diameter of a circle inscribed in a regular polygon of 15 sides with side length unity ?

Options

  1. a.

    0.5 cot 12°

  2. b.

    cot 12°

    Correct answer
  3. c.

    0.5 tan 12°

  4. d.

    tan 12°

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