public class sanjiaohanshu {	
		public static void intox(double x,int n) {
			//x±íʾ¶ÈÊý
			double pi=Math.PI;
			double a=x*(pi/180);
			switch(n){
			case 1:
				System.out.println(Math.sin(a));break£»//sinx
			case 2:
				System.out.println(Math.cos(a));break£»//cosx
			case 3:
				System.out.println(Math.tan(a));break£»//tanx		
			}
}
}