Aptitude - Height and Distance - Discussion
Discussion Forum : Height and Distance - General Questions (Q.No. 5)
5.
From a point P on a level ground, the angle of elevation of the top tower is 30°. If the tower is 100 m high, the distance of point P from the foot of the tower is:
Answer: Option
Explanation:
Let AB be the tower.
Then, 
APB = 30° and AB = 100 m.
| AB | = tan 30° = | 1 |
| AP | 3 |
 AP |
= (AB x 3) m |
| = 1003 m | |
| = (100 x 1.73) m | |
| = 173 m. |
Discussion:
29 comments Page 1 of 3.
Deeps said:
2 years ago
Why can't we use sin30?
It is also perpendicular right?
It is also perpendicular right?
(5)
Bala murali said:
3 years ago
Here, tan 30 is 1/√3.
Then how will 100/√3 become 1.73?
Then how will 100/√3 become 1.73?
(4)
Shivraj Singh said:
2 years ago
The value of √ 3 is 1.73.
(3)
Vivek Sunny said:
4 years ago
Approach 1*1= 1,
1.5*1.5=2.25,
2*2=4,
so.
√ 3 is between 1.5 and 2 so 1.73 is correct.
1.5*1.5=2.25,
2*2=4,
so.
√ 3 is between 1.5 and 2 so 1.73 is correct.
(3)
Sagar said:
4 years ago
1.73 how?
(2)
Gitanshu said:
6 years ago
How to divide 34.64/1.732 without calc. Is there any simple trick?
(2)
Shivam said:
7 months ago
@All.
The correct approach would be using sin 30 as we are given the value of perpendicular i.e. height of the tower and have to find the value of base distance b/w the tower and point p.
The correct approach would be using sin 30 as we are given the value of perpendicular i.e. height of the tower and have to find the value of base distance b/w the tower and point p.
(1)
Rutuja said:
4 years ago
how Root 3 is calculated as 1.73?
Please anyone explain it.
Please anyone explain it.
(1)
Vikas said:
5 years ago
Why tan only?
Because we find the height of the tower that we get tan30 because;
tan30 = perpendicular/base.
Because we find the height of the tower that we get tan30 because;
tan30 = perpendicular/base.
(1)
Nissipravalika said:
5 years ago
Hi,
How to calculate √3 value?
Anyone can explain please?
How to calculate √3 value?
Anyone can explain please?
(1)
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers