/// <summary> /// arctan(): the inverse function of sin(), input range of (-pi/2..pi/2) /// </summary> /// <param name="n1">The number to find the arctangent of (-pi/2..pi/2)</param> /// <remarks>Note that inverse trig functions are only defined within a specific range. /// Values outside this range will return NaN, although some margin for error is assumed. /// </remarks> public static BigFloat Arctan(BigFloat n1) { BigFloat res = new BigFloat(n1); n1.Arctan(); return n1; }