The problem involves estimating the height of the tree using a right triangle formed by Jay's line of sight, the tree, and the ground. Here's how to solve it step by step:

Variables:

1. The distance from Jay to the base of the tree is 15 feet.
2. The height of Jay's line of sight from the ground is 5 feet.
3. The total height of the tree is the sum of two parts:
   • The height above Jay's line of sight.
   • The height of his line of sight (5 feet).

Approach:

Using the tangent ratio in a right triangle: $\tan(\theta) = \frac{\text{opposite}}{\text{adjacent}}$

Here:

• The opposite side is the height of the tree above Jay's line of sight ($h_{\text{above}}$).
• The adjacent side is the horizontal distance (15 feet).

We need to find $\tan(\theta)$, the angle formed by the line of sight to the top of the tree. To proceed, we either:

1. Know or estimate $\theta$ from the problem setup (if provided), or
2. Use approximate measurements.

Let me confirm: Do you have the angle $\theta$ (or any additional data) for the topmost line of sight? If not, we can consider another estimation method.