Answer:
35.92 m
Explanation:
To have a better comprehension of the problem, we can draw it as in the image attached.
If we use the tangent relation in both triangles, we have:
tangent(35) = h/x
tangent(20) = h/(150-x)
From the first equation, we have:
x = h/tangent(35) = h/0.7
From the second equation, we have:
0.364 = h / (150 - h/0.7)
54.6 - 0.52h = h
1.52h = 54.6
h = 35.92 m