Mathematics for IGCSE & O level - Pythagoras' Theorem And Trigonometry (Section 6 - No. 14)
If the angle of elevation of the sun is 30 degrees, and a tree casts a shadow of 10 meters, what is the height of the tree (approximately)?
5 m
5.77 m
10 m
17.32 m
설명
Use tan(30) = height/10, height = 10 * tan(30) ≈ 5.77 meters. However the question incorrectly states the height.