package java.lang;

/**
 * A model class for the class java.lang.StrictMath.
 * 
 * @author Franck van Breugel
 */
public class StrictMath {
	
	/**
	 * Returns an approximation of the trigonometric sine of an angle. 
	 * 
	 * @param a an angle, in radians.
	 * @return the sine of the argument.
	 */
	public static double sin(double a) {
		return 16 * a * (Math.PI - a) / (5 * Math.PI * Math.PI - 4 * a * (Math.PI - a));
	}
}