Question

A bird is sitting on the top of 80m high tree. From a point on the ground, the angle
of elevation of the bird is 45° The bird flies away horizontally in such a way that it
remained at a constant height from the ground After 2 seconds, the angle of
elevation of the bird from the same point is 30°. Find the speed of flying of the bird.​

Answer 1

Question:

A bird is sitting on the top of 80m high tree. From a point on the ground, the angle  of elevation of the bird is 45° The bird flies away horizontally in such a way that it  remained at a constant height from the ground After 2 seconds, the angle of  elevation of the bird from the same point is 30°. Find the speed of flying of the bird.​

Answer:

Refers to the attachment