PHP cos()Functions
Examples
Returns the cosine of different numbers:
<?php
echo(cos(3) . "<br>");
echo(cos(-3) . "<br>");
echo(cos(0) . "<br>");
echo(cos(M_PI) . "<br>");
echo(cos(2*M_PI));
?>
echo(cos(3) . "<br>");
echo(cos(-3) . "<br>");
echo(cos(0) . "<br>");
echo(cos(M_PI) . "<br>");
echo(cos(2*M_PI));
?>
Run example »
Definition and Usage
The cos() function returns the cosine of a number.
Note: cos()The function returns a value between -1 and 1, representing the cosine of the angle.
Syntax
cos(number);
| Parameter | Description |
|---|---|
| number | Required. Specifies a number. |
Technical Details
| Return value: | numberthe cosine of |
|---|---|
| Return type: | Float |
| PHP version: | 4+ |
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