Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

If the angles of elevation of a tower from two points at distances a and b where a>b from its foot and in the same straight line from it are 30 degree and 60 degree,then height of the tower is?

Asked by Peeyush 15th March 2015, 8:02 PM
Answered by Expert
Answer:
 
L e t space space A B space space b e space t h e space h e i g h t space o f space t h e space t o w e r space a n d space B space b e space i t s space f o o t. A B space equals space h B D space equals space b B C space equals space a angle A D C space equals space 60 angle A C B space equals space 30 N o w comma space I n space triangle A B C. tan space 30 space equals space fraction numerator A B over denominator B C end fraction fraction numerator 1 over denominator square root of 3 end fraction equals space h over a h space equals space fraction numerator a over denominator square root of 3 end fraction space space space.... space left parenthesis 1 right parenthesis I n space triangle A D B comma tan space 60 space equals space h over b square root of 3 space equals space h over b h space equals space b square root of 3.... left parenthesis 2 right parenthesis m u l t i p l y i n g space left parenthesis 1 right parenthesis space a n d space left parenthesis 2 right parenthesis comma h squared equals space fraction numerator a over denominator square root of 3 end fraction cross times b square root of 3 h squared equals a b h space equals space square root of a b end root
Answered by Expert 16th March 2015, 11:35 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Your answer has been posted successfully!

Chat with us on WhatsApp