How to calculate PI value with atan() function in PHP

2 Answers

0 votes
$pi = atan(1) * 4;
     
echo "pi = " . $pi . "<br />";

/*
run:
 
pi = 3.1415926535898
 
*/

 



answered Apr 1, 2016 by avibootz
0 votes
$pi = 2 * atan(INF);
      
echo "pi = " . $pi . "<br />";
 
/*
run:
  
pi = 3.1415926535898
  
*/

 



answered Apr 3, 2016 by avibootz

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