PHP: cos() function

Description

The cos() function is used to get the cosine of a number.

Version:

(PHP 4 and above)

Syntax:

cos(num)

Parameter:

Return value:

The cosine of num.

Value Type: Float.

Pictorial Presentation

Example:

 <?php$val1= 0;$val2=4;$val3=-4;$zcos1=cos($val1);$zcos2=cos($val2);$zcos3=cos($val3);echo 
 "Cosine of $val1 is $zcos1
 <br /> ";echo "Cosine of $val2 is $zcos2<br />"
 ;echo "Cosine of $val3 is $zcos3<br />";?>

Output:

Cosine of 0 is 1
 Cosine of 4 is -0.653643620864
 Cosine of -4 is -0.653643620864
 

View the example in the browser

See also

PHP Function Reference

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