h.arccos

来自「强大的数学工具包」· ARCCOS 代码 · 共 30 行

                       * * * * * * * * * * *
                       *   arcsin, arccos  *
                       *   arctan, arccot  *
                       * * * * * * * * * * *

        "arcussinus, arcuscosinus, arcustangens, arcuscotangens"
        SYNTAX: X = arcsin(A)
                X = arccos(A)
                X = arctan(A)
                X = arccot(A)

        A is an expression whose value is an integer, a rational
        or a floating point number.

        X is assigned the value of the trigonometric function at A.

        For X = arcsin(A) or X = arccos(A), |A| must be <= 1.


        Example 1: (correct)

                arctan(1/4)


        Example 2: (incorrect)

                arcsin(2)

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