Atan - method of the Pm object
Description:
Returns the arctangent (invertetd tangent) of a number.
Syntax:
Double Atan(Double nValue)
Parameters:
| nValue | (Double) Any valid numeric expression. |
|---|
Return values:
Real number in the range from -Pi/2 to +Pi/2.
Example1:
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var
pi = 4 * Pm.Atan(1); //calculate the value of Pi
Dim
pi
pi = 4 * Pm.Atan(1) 'calculate the value of PiExample2:
Computing of derived arcus functions
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Arcsin = Pm.Atan(
x / Pm.Sqrt(-
x *
x + 1));
Arccos = Pm.Atan(-
x / Pm.Sqrt(-
x *
x + 1)) + 2 * Pm.Atan(1);
Arcsec = Pm.Atan(
x / Pm.Sqrt(
x *
x - 1)) + Pm.Sign(
x - 1) * 2 * Pm.Atan(1);
Arccosec = Pm.Atan(
x / Pm.Sqrt(
x *
x - 1)) + (Pm.Sign(
x) - 1) * 2 * Pm.Atan(1);
Arccotan = Pm.Atan(
x) + 2 * Pm.Atan(1);
Arcsin = Pm.Atan(
x / Pm.Sqrt(-
x *
x + 1))
Arccos = Pm.Atan(-
x / Pm.Sqrt(-
x *
x + 1)) + 2 * Pm.Atan(1)
Arcsec = Pm.Atan(
x / Pm.Sqrt(
x *
x - 1)) + Pm.Sign(
x - 1) * 2 * Pm.Atan(1)
Arccosec = Pm.Atan(
x / Pm.Sqrt(
x *
x - 1)) + (Pm.Sign(
x) - 1) * 2 * Pm.Atan(1)
Arccotan = Pm.Atan(
x) + 2 * Pm.Atan(1)