Question : A ladder is resting against a wall. The angle between the foot of the ladder and the wall is 60°, and the foot of the ladder is 3.6 m away from the wall. The length of the ladder (in m) is:
Option 1: 5.4
Option 2: 3.6
Option 3: 14.4
Option 4: 7.2
Answer (1)
20th Jan, 2024
Correct Answer: 7.2
Solution :
Let AC be the length of the ladder.
BC = 3.6 m
In $\triangle$ BAC,
$\cos 60^{\circ} = \frac{BC}{AC}$
⇒ $\frac{1}{2} = \frac{3.6}{AC}$
⇒ AC = 2 × 3.6 = 7.2 m
Hence, the correct answer is 7.2 m.
Comments (0)
Related Questions
Know More about
Staff Selection Commission Sub Inspector ...
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Get Updates Brochure
Thank You!
Your Staff Selection Commission Sub Inspector Exam brochure has been successfully mailed to your registered email id “”.
Upcoming Exams
Result Date:
4 Nov, 2024
- 11 Nov, 2024
Tier II
Admit Card Date:
12 Nov, 2024
- 12 Nov, 2024
Application Date:
5 Nov, 2024
- 20 Nov, 2024
Exam Date:
17 Nov, 2024
- 17 Nov, 2024
Application Date:
18 Oct, 2024
- 22 Nov, 2024
