Calculates the cosine of an angle.
Syntax
Cos(Angle)
The syntax of the Cos function consists of the following parts:
Part |
Description |
|---|---|
Angle |
The angle in radians. All data structures are allowed. All numeric data types are permitted. |
Remarks
The result has the same structure as the argument Angle. The calculation is done element by element where appropriate.
The result has the unit 1, if Angle has a unit. Otherwise, it has no unit.
The real cosine function is calculated for a real argument. The result then has the 64-bit floating point value data type. The following illustration shows the course of the function:
If Angle is complex, then the complex cosine function is calculated, which can be defined as follows:
(Exp(i * Angle) + Exp(-i * Angle)) / 2 with the imaginary unit i = (0, 1).
The result then has the complex 64-bit floating point value data type. The following illustration shows the course of the absolute value of the function:
If the argument is a list, then the function is executed for each element of the list and the result is also a list.
Available in
FlexPro Basic, Professional, Developer Suite
Examples
Cos(0) |
Results in 1. |
Cos(PI / 2) |
Results in 0. |
Dim x |
Calculates a signal with the course of the curve in the interval [0, 2π]. |