package Trig_Lib is

    function Sin (X : Float) return Float;

    function Cos (X : Float) return Float;

    function Tan (X : Float) return Float;

    function Cot (X : Float) return Float;

    function Asin (X : Float) return Float;

    function Acos (X : Float) return Float;

    function Atan (X : Float) return Float;

    function Atan2 (V, U : Float) return Float;

    function Sinh (X : Float) return Float;

    function Cosh (X : Float) return Float;

    function Tanh (X : Float) return Float;
end Trig_Lib;