The given problem can be exemplified in the following diagram:
Applying the Pythagorean theorem we get:

Solving the squares:

Solving the operations:

Now we take the square root to both sides:
![\sqrt[]{h^2}=\sqrt[]{1280ft^2}](https://img.qammunity.org/2023/formulas/mathematics/high-school/4wd8eom1klb43cc57qw4rywj8hu6glzlvh.png)
Solving the operations:

Therefore, the height of the tree is 35.8 feet.