Hello!
Please put this example below the asin() function's description.
Thank you!
Example:
<?php
$arg = 0.5;
$val = asin($arg);
echo "asin(" . $arg . ") = " . $val . " radians.<br/>";
echo "Pi value = " . pi() . "<br/>";
echo "asin(" . $arg . ") = " . $val/pi()*180 . " degrees<br/>";
$arg = 1;
$val = asin($arg);
echo "asin(" . $arg . ") = " . $val . " radians.<br/>";
echo "Pi value = " . pi() . "<br/>";
echo "asin(" . $arg . ") = " . $val/pi()*180 . " degrees<br/>";
?>
asin
(PHP 4, PHP 5, PHP 7, PHP 8)
asin — Arc sine
Description
Returns the arc sine of num in radians.
asin() is the inverse function of
sin(), which means that
$num == sin(asin($num)) for every value of
num that is in
the domain of asin().
Parameters
-
num -
The argument to process
Return Values
The arc sine of num in radians
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User Contributed Notes 1 note
rahmatjon at gmail dot com ¶
3 years ago
