How can PHP be used to calculate the sine value in degrees?

To calculate the sine value in degrees using PHP, you can use the `sin()` function provided by PHP's math extension. However, this function expects the angle to be in radians, so you need to convert the angle from degrees to radians before passing it to the `sin()` function. This can be done by multiplying the angle in degrees by `pi()/180`.

// Function to calculate sine value in degrees
function sinDegrees($angle) {
    $angleInRadians = $angle * pi() / 180;
    return sin($angleInRadians);
}

// Example usage
$angle = 45; // Angle in degrees
$sineValue = sinDegrees($angle);
echo "Sine value of $angle degrees is: $sineValue";