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 ...
?>
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See also:
asin(),
cos(),
tan(), and
deg2rad().
