In this case, an observer sees the top of a vertical object at an angle of elevation 60°. If the height is 21 units, which expression gives the horizontal distance?
Question
In this case, an observer sees the top of a vertical object at an angle of elevation 60°. If the height is 21 units, which expression gives the horizontal distance?
21Ö3
21/3
21
21/Ö3
Answer
21/Ö3
Detailed Explanation
Use tan q = opposite/adjacent. For q=60°, solve adjacent = height/tan q. — Examisthan.com