Cos ( double angle );
Description
Returns the trigonometric cosine of an angle.
Input parameters
| Parameter | Default value | Description |
|---|---|---|
| angle | - | Defines angle (in radians) whose cosine is calculated. |
Example
declare lower;
input a = 0;
input b = 10;
input periodBars = 20;
def w = 2 * Double.Pi / periodBars;
def x = CompoundValue(1, x[1] + 1, 0);
plot F = a + b * Cos(w * x);
The code draws the cosine function depending on a variable which starts from one and increments by one on each bar. The cyclic frequency(w) is calculated based on the periodBars input.