Given: The angle of elevation = 30° Distance between point and base of building = 25 m Concept used: In a right-angled triangle tanθ = perpendicular/base Calculation: Let the height of the building be ‘h’.
tanθ = perpendicular/base ⇒tan30°=h/25 ⇒1/√3=h/25 ⇒h=25/√3 ∴ The height of the building is 25/√3 .