sin

(PHP 4, PHP 5)

sin — Sine

Description

float sin ( float $arg )

sin() returns the sine of the arg parameter. The arg parameter is in radians.

Parameters

arg

A value in radians

Return Values

The sine of arg

Examples

Example #1 sin() example

<?php

// Precision depends on your precision directive
echo sin(deg2rad(60));  //  0.866025403 ...
echo sin(60);           // -0.304810621 ...

?>

See Also

• asin() - Arc sine
• sinh() - Hyperbolic sine
• cos() - Cosine
• tan() - Tangent
• deg2rad() - Converts the number in degrees to the radian equivalent