@Override
    public Object parse(SourceData sourceData, int rowIndex, Context context) {
        Object numberObj = numberParser.parse(sourceData, rowIndex, context);
        if (numberObj == null) {
            return null;
        }
        BigDecimal numberValue = OperatorTools.parseBigDecimal(numberObj);
        return Math.tan(Math.toRadians(numberValue.doubleValue()));
    }
TandFunction  -> tand(numeric)
description:
- Return NULL if 'numeric' is NULL;
- Return the tangent of 'numeric' in units of degrees.
inlong-sdk/transform-sdk/src/main/java/org/apache/inlong/sdk/transform/process/function/arithmetic/TandFunction.java