Answer:
The height of tree is approximately 121.5 feet.
Explanation:
We are given following in question:
Length of shadow = 150 feet
Angle of elevation of the sun =

The tree and the shadow forms a right angled triangle.
Thus, with the help of trigonometric relation, we can write:

Let x feet be the height of tree.
Putting all the values, we get,

Thus, the height of tree is approximately 121.5 feet.