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PhpDig is a PHP MySQL based
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cos — Returns the cosine for the given radians value.


float cos(radians);
float radians: Radians value


Cosine of a value


Returns the cosine of the value given by radians , which as its name suggests is to be given in radians.


PHP 3, PHP 4

See also

See also acos() , asin() , atan() , atan2() , sin() , tan()


Example 668. Calculate the cosine of a value

$rad = pi() / 2;
echo "The cosine of $rad = ", cos($rad);

PHP Functions Essential Reference. Copyright © 2002 by New Riders Publishing (Authors: Zak Greant, Graeme Merrall, Torben Wilson, Brett Michlitsch). This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at The authors of this book have elected not to choose any options under the OPL. This online book was obtained from and is designed to provide information about the PHP programming language, focusing on PHP version 4.0.4 for the most part. The information is provided on an as-is basis, and no warranty or fitness is implied. All persons and entities shall have neither liability nor responsibility to any person or entity with respect to any loss or damage arising from the information contained in this book.

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