engineering mathematics MCQ #13

The angle of elevation of the top of a tower from a certain point is 30°. If the observer moves 20 m towards the tower, the angle of elevation increases by 15°. The height of the tower is

engineering mathematics MCQ #13

  1. Question 1

    Q1. The angle of elevation of the top of a tower from a certain point is 30°. If the observer moves 20 m towards the tower, the angle of elevation increases by 15°. The height of the tower is

    • A) 20(√3 + 1) m
    • B) 10(√3 + 1) m
    • C) 30 m
    • D) 15 m

    Answer: 20(√3 + 1) m

    Explanation: Using the relation between the two angles of elevation, we derive the height of the tower.