Divya

acos() Function in PHP with Example

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

It returns NAN if number is not in the range -1 to 1.

always returns float number.

Example

<!DOCTYPE html>
<html>
<body>
<?php
echo(asin(1.66) . " ");
echo(asin(0.66) . " ");
echo(asin(-0.78) . " ");
echo(asin(0) . " ");
echo(asin(-1) . " ");
echo(asin(1) . " ");
echo(asin(2));
?>
</body>
</html>

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