Thread: help make trig values tables by using while or for loops

My assignment is Write a static void method called printTrigTables that prints the sin, cos, and tan of angles
////between 0 and 360 in increments of 30 degrees. The first column should be the angle size,
//and the next three columns should be the sin, cos, and tan. Use either a while loop or a for
//loop. One problem you will encounter however is that the Math functions for sin, cos, and
//tan take radians, not degrees! So, you must convert your angle to radians first. Here is the
//formula for degree to radian conversion:
//radians = degrees x PI / 180.

public static double degConvert(double degrees){ // converts to degrees
double radians = degrees * (Math.PI/180);
return radians;
}

For the trig table, can anyone help me make a method, or several encapsulated methods that do the following:

Count from 0 to 360 by 30's, using a loop; convert those numbers into radians using the equation x*pi/180; take all of those values and put them into Math.sin(); print.

public static void printTrigTables () {
 
 double a1, a2, a3,a4,a5, a6, a7,a8,a9,a10,a11,a12;4
 System.out.println ("degree, sin, cos, tan");
 double degree;
        System.out.print("Angle 30 degree ");
        a1 = 30 * Math.PI/180;
        System.out.println ("cos(" + a1 + ") is " + Math.acos(a1));
        System.out.println ("sin(" + a1 + ") is " + Math.asin(a1));
        System.out.println("tan(" + a1 + ") is " + Math.atan(a1));
        System.out.print("Angle 60 degree ");
        a2 = 60 * Math.PI/180;
        System.out.println("cos(" + a2 + ") is " + Math.acos(a2)) ;
        System.out.println("sin(" + a2 + ") is " + Math.asin(a2));
        System.out.println("tan(" + a2 + ") is " + Math.atan(a2));
        System.out.print("Angle 90 degree ");
        a3 = 90 * Math.PI/180;
        System.out.println("cos(" + a3 + ") is " + Math.acos(a3)) ;
        System.out.println("sin(" + a3 + ") is " + Math.asin(a3));
        System.out.println("tan(" + a3 + ") is " + Math.atan(a3));
        System.out.print("Angle 120 degree ");
        a4 = 120 * Math.PI/180;
        System.out.println("cos(" + a4 + ") is " + Math.acos(a4));
        System.out.println("sin(" + a4 + ") is " + Math.asin(a4));
        System.out.println("tan(" + a4 + ") is " + Math.atan(a4));
        System.out.print("Angle 150 degree ");
        a5 = 150 * Math.PI/180;
        System.out.println("cos(" + a5 + ") is " + Math.acos(a5));
        System.out.println("sin(" + a5 + ") is " + Math.asin(a5));
        System.out.println("tan(" + a5 + ") is " + Math.atan(a5));
        System.out.print("Angle 180 degree ");
        a6 = 180 * Math.PI/180;
        System.out.println("cos(" + a6 + ") is " + Math.acos(a6));
        System.out.println("sin(" + a6 + ") is " + Math.asin(a6));
        System.out.println("tan(" + a6 + ") is " + Math.atan(a6));
        System.out.print("Angle 210 degree ");
        a7 = 210 * Math.PI/180;
        System.out.println("cos (" + a7 + ") is " + Math.acos(a7));
        System.out.println("sin (" + a7 + ") is " + Math.asin(a7));
        System.out.println("tan (" + a7 + ") is " + Math.atan(a7));
        System.out.print("Angle 240 degree ");
        a8 = 240 * Math.PI/180;
        System.out.println("cos (" + a8 + ") is " + Math.acos(a8));
        System.out.println("sin (" + a8 + ") is " + Math.asin(a8));
        System.out.println("tan (" + a8 + ") is " + Math.atan(a8));
        System.out.print("Angle 270 degree ");
        a9 = 270 * Math.PI/180;
        System.out.println("cos (" + a9 + ") is " + Math.acos(a9));
        System.out.println("sin (" + a9 + ") is " + Math.asin(a9));
        System.out.println("tan (" + a9 + ") is " + Math.atan(a9));
        System.out.print("Angle 300 degree ");
        a10 = (300 * Math.PI)/180;
        System.out.println("cos (" + a10 + ") is " + Math.acos(a10));
        System.out.println("sin (" + a10 + ") is " + Math.asin(a10));
        System.out.println("tan (" + a10 + ") is " + Math.atan(a10));
        System.out.print("Angle 330 degree ");
        a11 = (330 * Math.PI)/180;
        System.out.println("cos (" + a11 + ") is " + Math.acos(a11));
        System.out.println("sin (" + a11 + ") is " + Math.asin(a11));
        System.out.println("tan (" + a11 + ") is " + Math.atan(a11));
        System.out.print("Angle 360 degree ");
        a12 = (360 * Math.PI)/180;
        System.out.println("cos (" + a12 + ") is " + Math.acos(a12));
        System.out.println("sin (" + a12 + ") is " + Math.asin(a12));
        System.out.println("tan (" + a12 + ") is " + Math.atan(a12));
    }                                              
 
 }

I don't know how to put a while or for loop into the program so the 1st column is the angle measure, the 2,3,and 4th columns are the trig values....Help me please!

System.out.println("Degree\tSin\t\tCos\t\tTan");
     int i = 0;
	  String str = "";
    for (int degree = 0; degree <= 360; degree += 30) {
	 if (i == 0)
	{  str = String.format("%3d\t%6.4f\t\t%6.4f\t\t%6.4f\n",  degree,
        Math.sin(degree * Math.PI / 180),
        Math.cos(degree * Math.PI / 180),
        Math.tan(degree * Math.PI / 180));
		  }
		  else
		  {
		  str = str + "\n" + String.format("%3d\t%6.4f\t\t%6.4f\t\t%6.4f\n",  degree,
        Math.sin(degree * Math.PI / 180),
        Math.cos(degree * Math.PI / 180),
        Math.tan(degree * Math.PI / 180));
 
		  }
		  i++;
 
    System.out.printf("%3d\t%6.4f\t\t%6.4f\t\t%6.4f\n", degree,
        Math.sin(degree * Math.PI / 180),
        Math.cos(degree * Math.PI / 180),
        Math.tan(degree * Math.PI / 180));
 
    }}}

My problem now is that I do not understand how %3d\t%6.4f\t\t%6.4f\t\t%6.4f\n makes the trig values work....Also, for the tan values at 90 and 270 are supposed to be undefined, but when I run it, I get a gigantic number.

It looks like you're borrowing code that you don't yet understand. Where did you get this code from?

Note that if you check out the PrintSream#printf(...) API, it will direct you to the java.util.Formatter API. As Norm states, it's all explained there.