C atan2() Function
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C atan2() Function
The atan2() function returns the angle in the plane between the positive x-axis and the ray from (0, 0) to the point (x, y), for atan2(y, x).
This function is defined in <math.h> header file.
Example
C Compiler
#include <stdio.h>
#include <math.h>
int main()
{
printf("%lf", atan2(8, 2));
return 0;
}
Output
1.325818
Syntax
atan2(data_type y, data_type x)
Parameter Values
| Value | Type | Explanation |
|---|---|---|
| y | Required | Specifies the y coordinate of the point. |
| x | Required | Specifies the x coordinate of the point. |
Return Value
| Value | Explanation |
|---|---|
| Number | The arc-tangent of the quotient of its arguments. The return value will be between -π and π. The return value is represented in radians. |
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