Question
The angle of elevation of the top of a building from a
point on the ground is 60°. After walking 20 meters towards the building, the angle of elevation becomes 75°. Find the initial distance from the point on the ground to the building.Solution
Let the height of the building be h meters, and the initial distance from the point on the ground to the building be d. From the first observation: tan(60°) = h/d, so h = d√3. From the second observation: tan(75°) = h/(d - 20). 2+√3= d√3/(d - 20) d = 10(√3+2) meters. Correct option: c
Select the option that will replace the question mark (?) in the following number series.
456, 444, 420, 384, 336, ?
Find the odd one out.
Statement:
The prices of food grains and vegetables have substantially increased due to a prolonged strike call given by the truck owners assoc...
Select the option that is related to the fifth letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster and th...
How will "Never Out Keep" be coded in the given language?
Odd one out
In a certain code, VANILLA is written as XXPFNIC. How is CARPENTER written in that code?
One day, Anamika leaves her office and walks 30m towards east. She then turned right and walks 30m, and then she again turned right and walks 15m. From ...
112 is related to 14 following a certain logic. Following the same logic, 176 related to 22. To which of the following is 200 related, following the sam...
Statements: R > T = H > E, N ≤ W > S > T
Conclusion:
I. T ≤ N
II. W > E
