Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 4 - No. 14)
If the angle of elevation from point A to the top of a building is 30 degrees, and the distance from A to the base of the building is 100 meters, what is the approximate height of the building?
50 meters
57.7 meters
100 meters
173.2 meters
Penjelasan
Use tangent: tan(30) = height/100 => height = 100*tan(30) ≈ 57.7