RRB NTPC · Question 25
If the length of the shadow of a vertical pole on the horizontal ground is √3 times its height, then the angle of elevation A. 40° B. 50° C. 30° D. 45°
Show answer & explanation
Answer: (A) C
Explanation
tan θ = height/shadow = h/(√3 h) = 1/√3, so θ = 30°.