
Attachments:

Answers
Answered by
6
42.3..
for rest..refer the attachment pls..
Attachments:

Answered by
160
⠀⠀⠀⠀⠀⠀
42.3 m
⠀⠀⠀⠀⠀
Angle of elevation of the bird flying at a distance of 100m from boy = 30°
Angle of elevation from a girl standing on a 20m high building = 45°
Both (boy and girl) are in opposite sides of the bird.
Distance of the girl from the bird.
Let A be the position of the bird and E and C be the positions of the girl and the boy, respectively.
Then,
∠ACB = 30°,
∠AED = 45°,
AC = 100 m,
EF = 20 m
In right triangle ACB,
we have,
In right triangle ADE,
we have,
Therefore, the distance of bird from the girl is 42.3m
Attachments:

Similar questions
Biology,
3 months ago
Math,
3 months ago
Social Sciences,
3 months ago
Social Sciences,
5 months ago
Science,
5 months ago
English,
1 year ago
History,
1 year ago
Biology,
1 year ago