Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

The angle of elevation of the top of a tower 24√3 m high from two points on the level ground on its opposite sides are 45° and 30°. What is the distance (in m) between the two points

Options:

(72 - 24\(\sqrt { 3}\)) m

(24\(\sqrt {2}\) + 72) m

(24\(\sqrt { 3}\) + 72) m

(24\(\sqrt { 3}\) + 48) m

Correct Answer:

(24\(\sqrt { 3}\) + 72) m

Explanation:

tan 45°       1   :    1  

                 ↓

              24\(\sqrt { 3}\)     ↓ 

                            24\(\sqrt { 3}\)

tan 30°       1   :    \(\sqrt { 3}\)  

                 ↓

              24\(\sqrt { 3}\)     ↓ 

                            72

 

Total distance =  (24\(\sqrt { 3}\) + 72) m