C Math sin() Function
Example
Return the sine of different angles:
const double PI = 3.141592653589793;
printf("%f", sin(3));
printf("%f", sin(-3));
printf("%f", sin(0));
printf("%f", sin(PI));
printf("%f", sin(PI / 2.0));
Definition and Usage
The sin() function returns the sine of an angle.
The sin() function is defined in the <math.h> header file.
Note: Angles are measured in radians.
Tip: It is convenient to create a constant for PI so that you can use fractions of PI for
angles. Some implementations of the <math.h> library include a constant
M_PI but it is not guaranteed to be available.
Syntax
One of the following:
sin(double angle);Parameter Values
| Parameter | Description |
|---|---|
| angle | Required. An angle in radians to find the sine of. |
Technical Details
| Returns: | A double value representing the sine of an angle.
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