What are the best practices for handling precision in mathematical calculations involving trigonometric functions in PHP?

When dealing with precision in mathematical calculations involving trigonometric functions in PHP, it is important to use the appropriate functions and set the precision level accordingly. One way to handle precision is by using PHP's built-in functions such as `sin()`, `cos()`, and `tan()` along with the `bcscale()` function to set the desired precision level for the calculations.

// Set the precision level for calculations
bcscale(10);

// Calculate sine of an angle
$angle = 45; // in degrees
$sine = bcdiv(bcsin(deg2rad($angle)), 1, 10);
echo "Sine of $angle degrees is: $sine\n";

// Calculate cosine of an angle
$cosine = bcdiv(bccos(deg2rad($angle)), 1, 10);
echo "Cosine of $angle degrees is: $cosine\n";

// Calculate tangent of an angle
$tangent = bcdiv(bctan(deg2rad($angle)), 1, 10);
echo "Tangent of $angle degrees is: $tangent\n";