Which is more 10 pancakes with a diameter of 6 inches or 25 pancakes with a radius of 2 inches or 50 pancakes with a circumferen
1 answer:
You might be interested in
Consider the attached ellipse. Let the sun be at the right focus. Then perihelion is at right vertex on the x-axis and aphelion is at the left vertex on the x-axis.
The distances:
- from perihelion to the sun in terms of ellipse is a-c;
- from aphelion to the sun in terms of ellipse is a+c.
Then
Add these two equations:
and subtract first equation from the second:
Note that thus
The equation for the planet's orbit is