Question

Find the sum of all 11 a bird is sitting on the top of a hundred metre high tower from a point on the ground the angle of elevation of the bird is 45 degree the bird flies away horizontally in such a way that its height remain the same from the ground after 10 second the angle of elevation of the bird off from the point is 30 degree find the speed of flying of the bird term of the ap whose middle term is 30

Answer 1

Answer:

apni dimag lagao samghe Jada dusro me help mat mange

Answer 2

Answer:

7.3m/s

Step-by-step explanation:

previously letdistance of point from foot of tower=x

after flying horizontally ditance from point =x+y

tan45=100/x

1=100/x

x=100

tan30=100/x+y

1/√3=100/x+y

x+y=100√3

100+y=100/√3

y=100*o.73

y=73m

speed=d/t

=73/10

=7.3m/s