package com.logicbig.example.math;
public class SinExample {
public static void main(String... args) {
findSine(0);
findSine(30);
findSine(45);
findSine(60);
findSine(90);
}
private static void findSine(double degrees) {
double radians = Math.toRadians(degrees);
double sinValue = Math.sin(radians);
System.out.printf("Sine of %s degree = %.2f %n", degrees, sinValue);
}
}
Output
Sine of 0.0 degree = 0.00
Sine of 30.0 degree = 0.50
Sine of 45.0 degree = 0.71
Sine of 60.0 degree = 0.87
Sine of 90.0 degree = 1.00
package com.logicbig.example.math;
public class SinGraphExample {
public static void main(String... args) {
int scale = 10;
for (double i = 0; i <= Math.PI * 2; i += 0.3) {
double sin = Math.sin(i);
int sinValue = (int) Math.round(sin * scale);
if (sinValue < 0) {
int spaces = scale - Math.abs(sinValue);
System.out.print(" ".repeat(spaces) + "+");
System.out.println(" ".repeat(scale - spaces - 1) + "|");
} else {
System.out.print(" ".repeat(scale) + "|");
System.out.println(" ".repeat(sinValue) + "+");
}
}
}
}
Output
|+
| +
| +
| +
| +
| +
| +
| +
| +
| +
| +
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
+ |
