Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

The angle of elevation of a ladder leaning against a house is 60° and the foot of the ladder is 6.5 m from the foot of the house. Find the length of the ladder in meters.

Options:

11.25 meters

17 meters

15 meters

13 meters

Correct Answer:

13 meters

Explanation:

We know ,

tan60º = \(\frac{ √3 }{1}\)

{ we know, tan A =  \(\frac{ P }{B}\) }

P = √3, B = 1

By using pythagoras theorem ,

P² + B² = H²

( √3 )² + 1² = H²

3 + 1 = H²

H = 2

According to question ,

1R = 6.5 m

So, 2R = 2 x 6.5 = 13 m

Length of ladder is = 13 m