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round	sinh

view the version of this page	Last updated: Thu, 10 Feb 2005

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.

Exemplu 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().

add a note User Contributed Notes
sin

Merve
28-Jul-2003 06:29


Remember, unless you specify, calculations are made in radians, so that's why you might be getting approximately 0.89 for the sine of 90.

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round	sinh

	Last updated: Thu, 10 Feb 2005

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