Angle of Elevation

Definition of Angle of Elevation

  • Angle of elevation is the angle between a horizontal line and the line joining the observer's eye to some object above the horizontal line.

Examples of Angle of Elevation

                                                               

Solved Example on Angle of Elevation

The angle of elevation of the top of a pole measures 48° from a point on the ground 18 ft away from its base. Fnd the height of the flagpole.

Choices:

A. 12 ft

B. 22 ft

C. 18 ft

D. 20 ft

Correct Answer: D

Solution:

Step 1: Let x be the height of the flagpole.

Step 2: tan 48° =

Step 3: x = 18 tan 48°

Step 4: x = 18 × (1.110612515) = 20

Step 5: So, the height of the flagpole is 20 ft.

                                       

Related Terms for Angle of Elevation

  • Angle
  • Horizontal Line
 

Additional Links for Angle of Elevation