Method: Angle#cot

Defined in:
lib/angles.rb

#cot ⇒ Object Also known as: cotangent 



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# File 'lib/angles.rb', line 207

def cot
  return nil if self.radians == 0 or self.radians == @@PI
  return 0 if self.radians == @@PI / 2

  1 / self.tan
end