PHP: asin() function

Description

The asin() function returns the arc sine of a number in radians.

Version:

(PHP 4 and above)

Syntax:

asin(number)

Parameter:

Return value:

The arc sine of a number radians.

Value Type: Float.

Example:

<?php
$val1= 0;
$val2=.4;
$zasine1=asin($val1);
$zasine2=asin($val2);
echo "Arc sine of  $val1  is  $zasine1<br />";
echo "Arc sine of  $val2  is  $zasine2<br />";
?>

Sample Output:

Arc sine of  0  is  0
Arc sine of  0.4  is  0.411516846067

View the example in the browser

Pictorial Presentation:

See also

PHP Function Reference

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