Answer:
The angle of elevation of his ladder is .
Step-by-step explanation:
Given : A fireman is standing 30 m directly west of a burning building. His ladder reaches 50 m up the side of the building.
To find : What is the angle of elevation (to the closest degree) of his ladder?
Solution :
Let us assume that ladder is making a right triangle with the burning building
Let be the angle of elevation of his ladder.
Then apply trigonometry,
Therefore, The angle of elevation of his ladder is .
Refer the attached figure below.