How can PHP developers ensure that their angle calculations are accurate and in the correct units (e.g., degrees vs. radians)?

To ensure that angle calculations are accurate and in the correct units, PHP developers can convert angles to radians before performing trigonometric functions. This can be done by multiplying the angle by `pi()/180` when working with degrees. Conversely, if the angle is already in radians, no conversion is necessary. 

// Convert angle to radians if it's in degrees
function degreesToRadians($degrees) {
    return $degrees * (pi() / 180);
}

// Calculate sine of a 45-degree angle
$angleDegrees = 45;
$angleRadians = degreesToRadians($angleDegrees);
$sineValue = sin($angleRadians);

echo $sineValue;

Keywords

PHP angle calculations accuracy units degrees vs. radians

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