| TAN(3) | Library Functions Manual | TAN(3) | 
tan, tanf —
#include <math.h>
double
  
  tan(double
    x);
float
  
  tanf(float
    x);
tan() and tanf() functions
  compute the tangent of x (measured in radians). A large
  magnitude argument may yield a result with little or no significance. For a
  discussion of error due to roundoff, see
  math(3).
tan() function returns the tangent value.
tan() function conforms to ANSI
  X3.159-1989 (“ANSI C89”).
| May 2, 1991 | NetBSD 9.3 |