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 ![]() ![]() |
AB |
= 30°.
Discussion:
62 comments Page 2 of 7.
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?
Sanjay said:
10 years ago
Ya question has some mistake it's not 3. It's 3^1/2.
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.
Ashish kaushik said:
10 years ago
Its simple let AB = x then ac = root3x.
Tan theta = ab/ac = x/root 3x = 1/root3.
Then tan theta =1/root3 = 30 degree.
Tan theta = ab/ac = x/root 3x = 1/root3.
Then tan theta =1/root3 = 30 degree.
Palash said:
9 years ago
I am not getting the question's meaning. They have included two objectives (tree as well as sun) but which one should I take to solve this problem correctly.
Please tell me friends.
Please tell me friends.
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