(PHP 3, PHP 4 , PHP 5)
sin() returns the sine of the arg parameter. The arg parameter is in radians.
Example 1. sin() example
<?php// Precision depends on your precision directiveecho sin(deg2rad(60)); // 0.866025403 ...echo sin(60); // -0.304810621 ...?>
See also: asin(), cos(), tan(), and deg2rad().
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