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tan()

« sys_getloadavg | tanh »
<?php
$float 
tan (
    
  // float $arg
);
?>
Result
$float = 0.99999999999999989
Examples
#1 tan  (M_PI_4)
#2 tan  (0)
See also
atan, atan2, atanh, constant, cos, deg2rad, get_defined_constants, sin, tanh