Syntax
#include <math.h> double tan(double x);Description
tan calculates the tangent of x, where x is expressed in radians. If x is too large, a partial loss of significance in the result can occur.
tan returns the value of the tangent of x.
This example computes x as the tangent of pi/4.
#include <math.h>
int main(void)
{
double pi,x;
pi = 3.1415926;
x = tan(pi/4.0);
printf("tan( %lf ) is %lf\n", pi/4, x);
return 0;
/****************************************************************************
The output should be:
tan( 0.785398 ) is 1.000000
****************************************************************************/
}
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