From a point 20 m above ground level on a vertical tower, the angle of depression of a point on the ground is 30°. Find the distance from the base of the tower to that point.
Show answer & explanation
Correct answer: B
Explanation
Height = 20 meters, Angle of depression = 30°
According to the formula:
tan θ = Height / Distance
tan 30° = 20 / Distance
1/√3 = 20 / Distance
Distance = 20√3=34.64m