PHP tan () function
Examples
Returns the number of different tangent:
<?php
echo(tan(M_PI_4) . "<br>");
echo(tan(0.50) . "<br>");
echo(tan(-0.50) . "<br>");
echo(tan(5) . "<br>");
echo(tan(10) . "<br>");
echo(tan(-5) . "<br>");
echo(tan(-10));
?>
echo(tan(M_PI_4) . "<br>");
echo(tan(0.50) . "<br>");
echo(tan(-0.50) . "<br>");
echo(tan(5) . "<br>");
echo(tan(10) . "<br>");
echo(tan(-5) . "<br>");
echo(tan(-10));
?>
Running instance »
Definition and Usage
tan () function returns the tangent of a number.
grammar
tan( number );
参数 | 描述 |
---|---|
number | 必需。规定一个弧度值。 |
technical details
return value: | number of tangent. |
---|---|
Return type: | Float |
PHP version: | 4+ |
PHP Math Reference