Answer:
The foci are located at

Explanation:
The standard equation of an ellipse with a vertical major axis is
where
.
The given equation is
.
To obtain the standard form, we must divide through by 36.

We simplify by canceling out the common factors to obtain;

By comparing this equation to

We have
.
To find the foci, we use the relation:

This implies that:



The foci are located at

Therefore the foci are

Or
and
