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    double acos(double);
 calculates arccosine

Linux: compile with gcc acos.c -o acos -lm -Wall

C Sourcecode Example

#include <stdio.h> /* including standard library */
//#include <windows.h> /* uncomment this for Windows */
#include <math.h> /* including math library */
int main ( void ){
    double a=0.2;
    printf("acos from %f is %f\n", a, acos(a) * 90 / 3.17);
    return 0;


  user@host:~$ ./acos 
  acos from 0.200000 is 38.879955

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c/math.h/acos.txt · Last modified: 2024/02/16 01:05 (external edit)

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