Returns the tangent of distinct numbers:
<?phpecho(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));?>The tan() function returns the tangent of a number.
tan( number );
| parameter | describe |
|---|---|
| number | Required. Specifies a value in radians. |
| Return value: | tangent of number . |
|---|---|
| Return type: | Float |
| PHP version: | 4+ |