sin

(PHP 4, PHP 5, PHP 7, PHP 8)

sin — Sine

Description

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

Parameters

num

A value in radians

Return Values

The sine of num

Examples

<?php
// Precision depends on your precision directive
echo sin(deg2rad(60)), PHP_EOL;  //  0.866025403 ...
echo sin(60), PHP_EOL;           // -0.304810621 ...
?>

See Also

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