method

acos

Importance_0
v1_8_7_72 - Show latest stable - 0 notes - Class: Math
acos(z) public

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# File lib/complex.rb, line 566
  def acos(z)
    if Complex.generic?(z) and z >= -1 and z <= 1
      acos!(z)
    else
      -1.0.im * log( z + 1.0.im * sqrt(1.0-z*z) )
    end
  end
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