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A bird is sitting on the top of a tree, which is 80m high. The angle of elevation of the bird, from on the

ground is 4

By Natalia

A bird is sitting on the top of a tree, which is 80m high. The angle of elevation of the bird, from on the

ground is 450. The bird flies away from the point of observation horizontally and remain at a constant height.

After 2 seconds, the angle of elevation of the bird from the point of observation becomes 300. Find the speed of the flying bird.​

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Natalia

Sin ∅ + cos ∅=a and sec ∅ + cos ∅ =b , then b(a²-1) =?

please give it fast…​

A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the

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  1. Answer:

    A bird is sitting on the top of a tree, which is 80m high. The angle of elevation of the bird, from on the

    ground is 450. The bird flies away from the point of observation horizontally and remain at a constant height.

    After 2 seconds, the angle of elevation of the bird from the point of observation becomes 300. Find the speed of the flying bird

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