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v4.2
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    中文EN
    v4.2

      acos()

      Function acos() calculates the radian of a cosine value.

      Arguments:

      • Cosine <number>, ∈ [-1, 1]

      Returns:

      • Radian <number>, ∈ [-PI/2, PI/2]

      Common Usage

      Example: calculate the radian of the cosine value 0.5

      return acos(0.5) * 180 / pi()
      

      Example: calculate the radians of a column of cosine values

      uncollect [1, -0.5, 0] as a
      return acos(a)
      
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