Hint: the points in the circumference can be obtained using:

x = xCenter + r * cos angle

y = yCenter + r * sin angle

"sin" and "cos" expect the angle to be measured in radians, instead of degrees. To convert from one unit to the other, you must remember that 360 degrees = 2 PI radians (or 180 degrees = PI radians): float radians = (angle * Math.PI / 180.0);

You might draw 72 points (as there are 360 degrees in a circumference, they would be spaced 5 degreees from each other)

Hint: in C#, cosine is Math.Cos, sine is Math.Sin and PI is Math.PI

```
using System;
public class exercise93
{
public static void Main()
{
double r, x, y;
for (int i = 0; i < 360; i += 5)
{
rad = i * Math.PI / 180.0;
x = 35 + 8 * Math.Cos(rad);
y = 10 + 8 * Math.Sin(rad);
Console.SetCursorPosition((int)x, (int)y);
Console.Write("X");
}
Console.SetCursorPosition(1, 20);
}
}
```

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