engineering mathematics MCQ #35

A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60°. When he moves 40 m away from the bank, he finds the angle of elevation to be 30°. Find the height of the tree.

engineering mathematics MCQ #35

  1. Question 1

    Q1. A person standing on the bank of a river observes that the angle of elevation of the top of a tree standing on the opposite bank is 60°. When he moves 40 m away from the bank, he finds the angle of elevation to be 30°. Find the height of the tree.

    • A) 20√3 m
    • B) 34.64 m
    • C) 40√3 m
    • D) 60 m

    Answer: 34.64 m

    Explanation: Using tangent for both angles, we derive height = 34.64 m.