Let O be the center and let F be one of the foci of the ellipse 25x^2 +16 y^2 = 400. A second ellipse, lying inside and tangent to the first ellipse, has its foci at O and F. What is the length of the minor axis of this second ellipse?
Thank you!
Please give the address of the original question.
https://web2.0calc.com/questions/please-help_64151
Here it is.
I have answered on the original thread.
