Question

5. In a village, a bird is sitting on the top of a tree, which is 80 m
high. The angle of elevation of the bird from a point on the ground
is 45 The bird flies away from the point of observation
horizontally and remains at a constant height. After 9 seconds
the angle of elevation of the bird from the point of observation
becomes the complementary angle of 60%
On the basis of the above information, answer any four of the following questions:
(a) Find the angle of elevation of the bird after 2 seconds
IM
(iv) None
(b) Find the distance covered by bird initially:
IM
(iv) None
(c) Find the distance covered by bird after 2 seconds
IM
(1) 20 (15 - 1)m
(m) 40(15 - 1)m
(mm) 60 (3-1)
(v) 80 (25 - 1)m
(d) Find the speed of flying of the bird.
IM
@) 201.5 -Il sec
(m) 40,5-1 sec
(m) 60,5-1 sec
(iv) 80,5 - 1 m see
(e) If the height is doubled then what will be the new distance covered by the bird? IM
a) 40(-5-1).
(m) 80 (15 - 1)m
(m) 160 (15 - 1)m
(iv) None
m
PART
B​

Answer 1

Answer:

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