PHP tan() Function
Example
Return the tangent of different numbers:
<?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));
?>
Try it Yourself »
Definition and Usage
The tan() function returns the tangent of a number.
Syntax
tan(number);
Parameter Values
| Parameter | Description |
|---|---|
| number | Required. Specifies a value in radians |
Technical Details
| Return Value: | The tangent of number |
|---|---|
| Return Type: | Float |
| PHP Version: | 4+ |
❮ PHP Math Reference
