acos

   Returns the arc cosine of its argument.

   Format

     #include  <math.h>

     double acos  (double x);

     float acosf  (float x); (Integrity servers, Alpha)

     long double acosl  (long double x); (Integrity servers, Alpha)

     double acosd  (double x); (Integrity servers, Alpha)

     float acosdf  (float x); (Integrity servers, Alpha)

     long double acosdl  (long double x);

                         (Integrity servers, Alpha)
 

Additional information available:

Argument        Description