A lamp post stands on a horizontal plane. From a point situated at a distance 150 m from its foot, the angle of elevation of the top is 30°. What is the height of the lamp post?
1
50 m
2
\(50{\rm{\;}}\sqrt 3 {\rm{\;m}}\)
3
\(\frac{{50}}{{\sqrt 3 }}{\rm{\;m}}\)
4
100 m