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# sin

(PHP 3, 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.

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(), cos(), tan(), and deg2rad().

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