C Language: cos function
(Cosine)
In the C Programming Language, the cos function returns the cosine of x.
Syntax
The syntax for the cos function in the C Language is:
double cos(double x);
Parameters or Arguments
- x
- A value expressed in radians (not degrees).
Returns
The cos function returns the cosine of x, measured in radians.
Required Header
In the C Language, the required header for the cos function is:
#include <math.h>
Applies To
In the C Language, the cos function can be used in the following versions:
- ANSI/ISO 9899-1990
cos Example
/* Example using cos by TechOnTheNet.com */ #include <stdio.h> #include <math.h> int main(int argc, const char * argv[]) { /* Define temporary variables */ double value; double result; /* Assign the value we will find the cos of */ value = 0.5; /* Calculate the Cosine of value */ result = cos(value); /* Display the result of the calculation */ printf("The Cosine of %f is %f\n", value, result); return 0; }
When compiled and run, this application will output:
The Cosine of 0.500000 is 0.877583
Similar Functions
Other C functions that are similar to the cos function:
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