public static void Cot(double degrees, double expectedResult)
{
double radians = Angle.DegreesToRadians(degrees);
Assert.AreEqual(expectedResult, TrigonometryLibrary.Cot(radians), Tolerance);
}
/// <summary>
/// Slope of the curve in local coordinates about the local origin that corresponds to the parametric coordinate given.
/// </summary>
/// <param name="angleRadians">Parametric coordinate in radians.</param>
/// <returns></returns>
public override double SlopeByAngle(double angleRadians)
{
return(-1 * (DistanceFromVertexMinorToMajorAxis / DistanceFromVertexMajorToLocalOrigin) * TrigonometryLibrary.Cot(angleRadians));
}