MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping
Menu
Grade: 10
        The angle of elevation of the top T of a vertical tower TA from point B on the ground is 60° . from a point C , 40 m vertically above the point B , angle of elevation is 30° Find the height of the tower & the distance between the points A & B.
2 years ago

Answers : (1)

Neelesh Kumar
45 Points
							
first a fall construct the diagram
let 
TA-BC=X
NOW tan60 = (BC+(TA-BC))/AB................................(1)
SIMILARLY tan30 = (TA-BC)/AB.................................(2)
FROM equation  ..2... AB =  X * root3...............tan 30 =1/root3.......................(3)
from equation ..1   …....AB(root3) = 40 + X.............................(4)
from eq 3 put value of AB into eq 4
we get
3(X) = 40 + X
2(X) = 40
X  =  20
THEN HEIGHT OF TOWER BE   X  + 40
   20+40=60
AND DISTANCE B/W AB =20(root3)
 
2 years ago
Think You Can Provide A Better Answer ?
Answer & Earn Cool Goodies


Course Features

  • 731 Video Lectures
  • Revision Notes
  • Previous Year Papers
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Test paper with Video Solution


Course Features

  • 31 Video Lectures
  • Revision Notes
  • Test paper with Video Solution
  • Mind Map
  • Study Planner
  • NCERT Solutions
  • Discussion Forum
  • Previous Year Exam Questions


Ask Experts

Have any Question? Ask Experts

Post Question

 
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!! Click Here for details