“arc cotangent”的概念、定义、翻译、参考文献-科学参考

单词	arc cotangent
释义	arc cotangent [`ärk kō`tan·jǝnt] ^MATHEMATICS 1. For a number x, any angle whose cotangent equals x. 2. 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.
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