. A bird is sitting on the top ofa tree, which is 80 m high. The angle of elevation of thebird, from a point on the ground is 45Â°. The bird flies away from the point of observationhorizontally and remains at a constant height. After 2 seconds, the angle of elevationof the bird from the point of observation becomes 30Â°. Find the speed offlying of thebird.

. A bird is sitting on the top ofa tree, which is 80 m high. The angle

1.	. A bird is sitting on the top ofa tree, which is 80 m high. The angle of elevation of thebird, from a point on the ground is 45Â°. The bird flies away from the point of observationhorizontally and remains at a constant height. After 2 seconds, the angle of elevationof the bird from the point of observation becomes 30Â°. Find the speed offlying of thebird.
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