Solve the problem.
-A contractor needs to know the height of a building to estimate the cost of a job. From a point 90 feet away from the base of the building, the angle of elevation to the top of the building is found
To be 42° 17´. Find the height of the building. Round your answer to the hundredths place when
Necessary.
A)84.75 ft
B)80.32 ft
C)81.85 ft
D)86.08 ft

Question

Quizplus · Accepted Answer

Using the tangent function in trigonometry, tan(42° 17') = height / 90. Solving for height gives approximately 81.85 ft.

Solve the Problem. -A Contractor Needs to Know the Height of a Building