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cos

Usage

   #include <math.h>
   double cos(double x);

   ANSI

Description

   The function cos calculates the cosine of the floating point argument x
   where x is in radians.

Example 


   #include <math.h>
   #include <stdio.h>
   #include <stdlib.h>

   int main()
   {
       double value = 2.5556,result;
       result = cos(value);
       printf("The cosine of %f is %f\n",value,result);
       return EXIT_SUCCESS;
   }

Return Value

   cos returns the cosine of x. Zero is returned on error and errno is set.
   Error handling can be modified with matherr.

See Also

   acos, asin, atan, atan2, acosh, matherr, sin, sinh, tan, tanh