Mathematics
NULL
Medium
Question
From a point P on level ground, the angle of elevation to the top of a 100 m tower is 30°. How far is P from the foot of the tower?
A
149 m
B
156 m
C
173 m
✓ Official correct answer
D
200 m
Community credibility
Registered members can vote for the answer they believe is correct today and explain why. If the facts change after an election or news event, suggest a new option so others can vote it up.
A
149 m
No member explanations yet for this option.
B
156 m
No member explanations yet for this option.
C
173 m
No member explanations yet for this option.
D
200 m
No member explanations yet for this option.
Explanation
tan 30° = 100 / d ⇒ d = 100√3 ≈ 173 m.