In this program we are going to practice using the Math class by computing some important values on the unit circle. Starting at 0 and going up by
PI/4 radians (or 45 degrees), print out information of the format below.
Radians: (cos, sin)
0.0: 1.0, 0.0
0.79: 0.7, 0.71
1.57: 0.0, 1.0
2.36: -0.71, 0.7
3.14: -1.0, 0.0
3.93: -0.7, -0.71
4.71: 0.0, -1.0
5.5: 0.71, -0.71
Hints:
You’ll need to use the Math.sin, Math.cos methods
and the Math.PI constant!
You’ll also need to loop from 0 to 2*PI
You can round a decimal to 2 decimal places by multiplying by 100, rounding to the nearest int, and then dividing by 100. Here’s an example:
double value = 0.431675;
value = value * 100; // 43.1675
value = Math.round(value) // 43.0
value = value / 100.0; // 0.43
// Or put it all on one line:
value = Math.round(value * 100) / 100.0;

Answer:

The program in Java is:

import java.lang.*;

public class MyClass {

   public static void main(String args[]) {

     for(int i= 0;i<360;i+=45){          

         double angle = Math.round(Math.toRadians(i)*100.0)/100.0;

         double cosX = Math.round(Math.cos(angle)*100.0)/100.0;

         double sinX = Math.round(Math.sin(angle)*100.0)/100.0;

         System.out.println(angle+": "+cosX +" "+ sinX);

     }

   }

}

Explanation:

This line iterates through the angles from 0 to 360 or 0 to 2*Pi

for(int i= 0;i<360;i+=45){          

This calculates the angle to radians

         double angle = Math.round(Math.toRadians(i)*100.0)/100.0;

This calculats the cosine of the angle rounded to 2 decimal place

         double cosX = Math.round(Math.cos(angle)*100.0)/100.0;

This calculats the sine of the angle rounded to 2 decimal place

         double sinX = Math.round(Math.sin(angle)*100.0)/100.0;

This prints the required output          

         System.out.println(angle+": "+cosX +" "+ sinX);

     }

Write the command and explain about each formula in MS Excel


1. SUM

2. AVERAGE

3. MAx

4. MIN

5. COUNT

Write a class called TextProcessor that implements the methods listed below. Your implementation may use the charAt() and length() methods from the String class You must not use any other String methods, and you must not use any of the methods in the Character class. You may not use any integer literal values except for 0 and 1.

What email program would you suggest and why?