Bissoy.com
Doctors Medicines MCQs Q&A

There are two lifts A and B in a mall and angle of elevation made by person in lift A to the person in lift B is 45°. When lift A moves 2 m upwards and lift B moves 1 m downwards, then angle of elevation changes to 30°, then find the horizontal distance between two lifts. (Take √3 = 1.7)

There are two lifts A and B in a mall and angle of elevation made by person in lift A to the person in lift B is 45°. When lift A moves 2 m upwards and lift B moves 1 m downwards, then angle of elevation changes to 30°, then find the horizontal distance between two lifts. (Take √3 = 1.7) Correct Answer 7.05 m

GIVEN:

Angle of elevation made by person in lift A to the person in lift B = 45°.

When lift A moves 2 m upwards and lift B moves 1 m downwards, then angle of elevation = 30°

CONCEPT:

Height and distance

FORMULA USED:

Tan θ = Perpendicular / Base

CALCULATION:

×

⇒ d = (9 + 3√3) / 2

⇒ d = 7.05 m

Related Questions

A Person was standing on a road near a mall. He was 1215 m away from the mall and able to see the top of the mall from the road in such a way that the top of a tree, which is in between him and the mall, was exactly in line of sight with the top of the mall. The tree height is 20 m and it is 60 m away from him. How tall (in m) is the mall ?
In the question below are given three statements followed by three conclusions numbered I, II and III. You have to take the given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: I. Some lifts are working II. Some working are starting III. Only bus is driving Conclusions: I. Some lifts being driving is a possibility II. All lifts being working is a possibility III. No lifts being starting is a possibility
Gaurav cycles towards South-West for a distance of 6 m and stops there. Further, he moves towards East a distance of 10 m and from there he moves towards North-East a distance of 6 m. Next, he moves towards West a distance of 6 m. Now, he moves towards North-West a distance of 2 m. Next, he moves towards West a distance of 4 m and then towards South-West 6 m and stops at that point. Now, where is he from the starting point?
If the first two statements are true, the third statement is :
I. The Kingston Mall has more stores than the Galleria.
II. The Four Corners Mall has fewer stores than the Galleria.
III. The Kingston Mall has more stores than the Four Corners Mall.
A map shows the elevations of Darjeeling, Gangtok, Kalimpong, Pelling, and Siliguri. Kalimpong is at a lower elevation than Gangtok, Pelling is at a lower elevation than Gangtok. Pelling is at a higher elevation than Siliguri. Darjeeling is at a higher elevation than Gangtok. Which of the following statements can be inferred from the paragraph above? i. Pelling is at a higher elevation than Kalimpong ii. Kalimpong is at a lower elevation than Darjeeling iii. Kalimpong is at a higher elevation than Siliguri iv. Siliguri is at a lower elevation than Gangtok
Mohan traveled five cities (A, B, C, D and E) starting from home by a car which has a mileage such that the car can travel 10 km in 1 liter petrol. Distance between city A and B is twice the distance between home to city A. Distance between city B and C is thrice the distance between home to city A. Distance between city C and D is 100. Distance between city D and E is 1.5 times than the distance between B and C. Average distance traveled by Mohan was 41 km between five cities. Find how much petrol was needed by Mohan to travel from city B to D.
Two involute gears are designed to mesh for a given centre distance and a given angular velocity ratio (other than 1). During assembly, the centre distance has increased slightly. Then which of the following changes occur? (i) Velocity ratio changes (ii) Pressure angle changes (iii) Pitch circle diameter changes (iv) Working depth changes (v) Base circle radius changes Select the correct answer using the code given below.
In the question two statements are given. followed by three conclusions, I, II and III. You have to consider the statement to be true even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, supports the given statements. Statement 1: Many business Offices are located in buildings having 2 to 8 floors. Statement 2: If a building has more than 3 floors, it has a lift. Conclusion I: All floors maybe reached by lifts. Conclusion II: Only floors above the 3rd floors have lifts Conclusion III: 7th floors have lifts.
The tension in the cable supporting a lift moving upwards is twice the tension when the lift moves downwards. What is the acceleration of the lift?
In the question below are given two statements followed by three conclusions I, II and III. You have to take the given statements to be true even if they seem to be at variance from commonly known facts. Read all the conclusions and then decide which of the given conclusions logically follows from the given statements disregarding commonly known facts. Statements: Some tapes are old. All tapes are lift. Conclusions: I. All lifts are tapes. II. Some lifts are old. III. No Lift is old.