The angle of elevation of a ladder leaning against a wall is 60° and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is

A 2.3 m
B 9.2 m
C 4.6 m
D 7.8 m

Correct Answer: 9.2 m

Let AB be the wall and BC be the ladder. Height and Distance mcq solution image Then, ∠ACB = 60° = AC = 4.6m ACBC = cos60∘ = 12 ⇒ BC = 2 × AC = 2 × 4.6 = 9.2m
Bissoy MCQ
#গণিত #Combined Bank (সমন্বিত ব্যাংক) #সমন্বিত ৬ (ব্যাংক) ও ২ টি আর্থিক প্রতিষ্ঠান - সিনিয়র অফিসার ১০.০৬.২০১৯

Related Questions

The angle of elevation of a ladder leaning against a wall is 60" and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is-
A 2.3m
B 4.6m
C 7.8m
D 9.2m
The foot of a ladder is 2 m away from a vertical wall. The height of the top of the ladder is 12 m less than the length of the ladder. What is the length of the ladder?
A 42 m
B 4. 25 m
C 32 m
D 42.5 m
The foot of a ladder is 2 on away from a vertical wall. The height of the top of the ladder is 12m less than the length of the ladder. What is the length of the ladder?
A 42 m
B 4.25 m
C 32 m
D 42.5 m
A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?
A 6.2 m
B 6.5 m
C 6.8 m
D \7.5 m
A leader rests against a wall is perpendicular to the ground if the bottom of the ladder is 4m away from the bottom of the wall, while the top of the ladder is at a height of 3m. What is the length of the ladder.
A 7m
B 35m
C 5m
D 25m
A ladder is placed against a wall such that its foot is at a distance of 2.5 m from the and its top reaches a window 6 m about ground. Find the length of the ladder.
A 6.5 m
B 8.5
C 4.5
D 2.5 m
৪ঃ৬, ৫ঃ২, ও ১ঃ৩ এর মিশ্র অনুপাত কত?
A ৩৬ঃ২০
B ১০ঃ১১
C ১৫ঃ৬০
D ২০ঃ৩৬
Forty tiles of dimensions 1 foot * 2 foot each are required to completely cover a floor. How many tiles of dimensions 2 foot * 4 foot each would be required to completely cover the same floor?
A 10
B 20
C 80
D 160
If a ladder touches the roof of a wall and makes an angle of 40° with the 15 metre ling wall , then the length of the ladder is-
A 30m
B 15m
C 45m
D 15√2m
On a ladder resting on smooth ground and leaning against vertical wall, the force of friction will be
A Towards the wall at its upper end
B Away from the wall at its upper end
C Upwards at its upper end
D Downwards at its upper end

Next steps