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Related to arc cotangent: Inverse tangent, Inverse cosecant, Inverse cosine
arc cotangent[′ärk kō′tan·jənt]
Also known as anticotangent; inverse cotangent.
For a number x, any angle whose cotangent equals x.
For a number x, the angle between 0 radians and π radians whose cotangent equals x ; it is the value at x of the inverse of the restriction of the cotangent function to the interval between 0 and π.