Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

Two buildings face each other. The height of one building is greater than that of the other. The smaller building is 80 m high. The angles of depression of the top and the bottom of the smaller building from the top of the taller building are 45º and 60º respectively. Find the height of the taller building.
Asked by Topperlearning User | 02 Nov, 2017, 09:19: AM
Expert Answer
 
In the given figure, PC denotes the taller building and AB denotes the 80 m tall building.
 
 
We are interested in determining the height of the taller building, I which is., PC
 
 If we look at the figure carefully and observe that PB is a transversal to the parallel lines PQ and BD.
 
Therefore, angleQPB and anglePBD are alternate angles, and are equal.
 
So, anglePBD = 45º. Similarly, anglePAC = 60º.
 
In the right angled triangle PBD, we have
 
Answered by | 02 Nov, 2017, 11:19: AM
CBSE 10 - Maths
Asked by nikunjgupta102021 | 12 Jul, 2021, 09:01: AM
ANSWERED BY EXPERT
CBSE 10 - Maths
Asked by onkarmishra074 | 17 May, 2020, 02:52: PM
ANSWERED BY EXPERT
Get FREE Sample Mock Papers for Final Exams
Download Now
×