Aptitude - Height and Distance - Discussion
Discussion Forum : Height and Distance - General Questions (Q.No. 6)
6.
The angle of elevation of the sun, when the length of the shadow of a tree 3 times the height of the tree, is:
Answer: Option
Explanation:
Let AB be the tree and AC be its shadow.
Let 
ACB = 
.
| Then, | AC | = | 3  cot = 3 |
| AB |
= 30°.
Discussion:
62 comments Page 5 of 7.
Kanaga said:
1 decade ago
@Mjp:Thanks!!!
Shro said:
1 decade ago
Thanks Balaji
Dendup said:
1 decade ago
may i know how AC/AB is related to cot@??
Maddy said:
1 decade ago
Since you know that tan @ = P/B that is AB/AC. And the opposite of tan @ is cot@= B/P that is AC/AB.
I hope it will help you to understand.
I hope it will help you to understand.
XMP said:
1 decade ago
What is the value of AC & AB?
Manu said:
1 decade ago
Consider the height of the tree is 'x' m. Then the shadow is (3)^1/2. And apply tan or cot based on the relation which you want to find.
Aparna said:
1 decade ago
Why don't we consider tan 60 here?
Shaik sajid said:
8 years ago
Hey answer is cot 30 degrees but we can also say tan 60 degrees.
Because in the options 60 also there.
Because in the options 60 also there.
Lavanya said:
10 years ago
Guys they said shadow of the tree is root 3 times of its height that is if we take height as "x" then base is "root 3x".
If we do by using Tan then:
Tan theta = Height/Base.
= x/root 3x.
By cancelling we will get 1/root 3.
Theta = tan-1(1/root 3).
i.e theta = 30 that's it.
If we do by using Tan then:
Tan theta = Height/Base.
= x/root 3x.
By cancelling we will get 1/root 3.
Theta = tan-1(1/root 3).
i.e theta = 30 that's it.
Shiyas said:
10 years ago
@Lavanaya.
How you cancel "x/root 3x" as "x/root3"? I think it is wrong.
How you cancel "x/root 3x" as "x/root3"? I think it is wrong.
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