PHP Tutorial - PHP sin() Function
Definition
The sin() function calculates the sine value.
Syntax
PHP sin() Function has the following syntax.
float sin ( float num ) Parameter
| Parameter | Description |
|---|---|
| number | Required. Specifies a value in radians |
The parameter should be passed as radians.
We should use deg2rad() to convert degrees to radians.
Return
PHP sin() Function returns the sine value.
Example
Return the sine of different numbers
<?php/* ww w .j av a 2 s . co m*/
echo(sin(3) . "\n");
echo(sin(-3) . "\n");
echo(sin(0) . "\n");
echo(sin(M_PI) . "\n");
echo(sin(M_PI_2) . "\n");
$sin1 = sin(10);
print($sin1);
print "\n";
$sin2 = sin(deg2rad(80));
print($sin2);
?>
The code above generates the following result.
